{"id":9575257211117,"title":"Irwin Tools IRWIN Step Drill Bit, 3\/16-Inch to 7\/8-Inch, 3\/8-Inch Shank (10234) #4 (3\/16-7\/8\") High Speed Steel","handle":"irwin-tools-irwin-step-drill-bit-3-16-inch-to-7-8-inch-3-8-inch-shank-10234-4-3-16-7-8-high-speed-steel","description":"\u003ch3\u003eIrwin Tools IRWIN Step Drill Bit, 3\/16-Inch to 7\/8-Inch, 3\/8-Inch Shank (10234)\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eIrwin 10234 Unibit 4 12-Step High Speed Steel 3\/8-inch\nStep Drill Bit, 1\/16-inch Steps (3\/16- to 7\/8-inch) Save time by eliminating\nthe need to change drills when drilling round holes in thin materials. Each\nsmaller size drill also acts as a pilot for the next size. Made from\nindustrial-grade high-speed molybdenum steel heat treated for maximum\ndurability. Ideal for drilling holes into thin materials such as stainless\nsteel, copper, brass, aluminum, plastic and laminates. SpeedPoint tip\npenetrates faster than previous Unibits and prevents walking. Non-skid tip\ndoes away with the need for center punches; 3-faltted hex shank prevents\nslipping in drill chuck. Drill diameters etched in flute for easy\nidentification.. The Irwin 10234 UniBit 4 12-Step High Speed Steel\nFractional Self-Starting Step Drill has a single-flute cutting edge to give\nyou more control and produce true, round holes. Twelve holes range from 3\/16\nto 7\/8 inches, in 1\/16-inch increments. A non-skid tip does away with the need\nfor center punches, while the three flatted shanks prevent slipping in the\ndrill chuck. This drill is made from industrial-grade high-speed molybdenum\nsteel heat treated for maximum durability, and it is ideal for work on thinner\nmaterials. The multiple steps mean you don't have to have a toolbox with\nspecific size drill bits, and this drill is backed by a full lifetime\nwarranty. P.when('A').execute(function(A) {\nA.on('a:expander:toggle_description:toggle:collapse', function(data) {\nwindow.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the\nManufacturer The 4 UniBit Step Drill has 12 holes--3\/16-inch to 7\/8-inch hole\nsizes with increments of 1\/16-inch- shank size is 3\/8-inch. Each UniBit step\ndrill has an easy-to-sharpen, non-skid tip which eliminates skidding and the\nneed for center punching; the tip gives sure starts even on curved surfaces.\nThe single-fluted cutting edge that you will find on the UniBit step drills\nhelps assure true round holes and allows greater control. They are constructed\nof industrial grade high speed molybdenum steel and heat treated to assure\nmaximum durability. The UniBit step drill has 3 flatted shanks, which prevents\nslipping in drill chuck. The multiple steps on each UniBit eliminates the need\nto maintain a toolbox full of specific size drill bits. Full lifetime warranty\n--each UniBit step drill is warranted to be free from defects in material and\nworkmanship for the life of the tool, except for damage caused by abuse,\nmisuse, or alteration. See more\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eSave time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size.\u003c\/li\u003e\n \u003cli\u003eMade from industrial-grade high-speed molybdenum steel heat treated for maximum durability. SpeedPoint tip penetrates faster and prevents walking.\u003c\/li\u003e\n \u003cli\u003eIdeal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.\u003c\/li\u003e\n \u003cli\u003eNon-skid tip, no need for center punches. 3-faltted hex shank prevents drill chuck slipping. Drill diameters etched in flute for easy identification.\u003c\/li\u003e\n \u003cli\u003eBacked by a full lifetime warranty.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-09-16T00:02:40+10:00","created_at":"2026-09-09T19:29:14+10:00","vendor":"IRWIN","type":"Drill Bits","tags":["industrial_Sep2026"],"price":22800,"price_min":22800,"price_max":22800,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50652781150445,"title":"#4 (3\/16-7\/8\") \/ High Speed Steel","option1":"#4 (3\/16-7\/8\")","option2":"High Speed Steel","option3":null,"sku":"B00004THZ0","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Irwin Tools IRWIN Step Drill Bit, 3\/16-Inch to 7\/8-Inch, 3\/8-Inch Shank (10234) #4 (3\/16-7\/8\") High Speed Steel - #4 (3\/16-7\/8\") \/ High Speed Steel","public_title":"#4 (3\/16-7\/8\") \/ High Speed Steel","options":["#4 (3\/16-7\/8\")","High Speed Steel"],"price":22800,"weight":82,"compare_at_price":null,"inventory_management":"shopify","barcode":"785533446074","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/leoforward.com\/cdn\/shop\/files\/B00004THZ0.jpg?v=1788946156","\/\/leoforward.com\/cdn\/shop\/files\/41s3aKCFlML._SX35_SY46.jpg?v=1788946156"],"featured_image":"\/\/leoforward.com\/cdn\/shop\/files\/B00004THZ0.jpg?v=1788946156","options":["Size","Style"],"media":[{"alt":null,"id":41960957182189,"position":1,"preview_image":{"aspect_ratio":0.54,"height":500,"width":270,"src":"\/\/leoforward.com\/cdn\/shop\/files\/B00004THZ0.jpg?v=1788946156"},"aspect_ratio":0.54,"height":500,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/B00004THZ0.jpg?v=1788946156","width":270},{"alt":null,"id":41960957214957,"position":2,"preview_image":{"aspect_ratio":1.75,"height":20,"width":35,"src":"\/\/leoforward.com\/cdn\/shop\/files\/41s3aKCFlML._SX35_SY46.jpg?v=1788946156"},"aspect_ratio":1.75,"height":20,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/41s3aKCFlML._SX35_SY46.jpg?v=1788946156","width":35}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eIrwin Tools IRWIN Step Drill Bit, 3\/16-Inch to 7\/8-Inch, 3\/8-Inch Shank (10234)\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eIrwin 10234 Unibit 4 12-Step High Speed Steel 3\/8-inch\nStep Drill Bit, 1\/16-inch Steps (3\/16- to 7\/8-inch) Save time by eliminating\nthe need to change drills when drilling round holes in thin materials. Each\nsmaller size drill also acts as a pilot for the next size. Made from\nindustrial-grade high-speed molybdenum steel heat treated for maximum\ndurability. Ideal for drilling holes into thin materials such as stainless\nsteel, copper, brass, aluminum, plastic and laminates. SpeedPoint tip\npenetrates faster than previous Unibits and prevents walking. Non-skid tip\ndoes away with the need for center punches; 3-faltted hex shank prevents\nslipping in drill chuck. Drill diameters etched in flute for easy\nidentification.. The Irwin 10234 UniBit 4 12-Step High Speed Steel\nFractional Self-Starting Step Drill has a single-flute cutting edge to give\nyou more control and produce true, round holes. Twelve holes range from 3\/16\nto 7\/8 inches, in 1\/16-inch increments. A non-skid tip does away with the need\nfor center punches, while the three flatted shanks prevent slipping in the\ndrill chuck. This drill is made from industrial-grade high-speed molybdenum\nsteel heat treated for maximum durability, and it is ideal for work on thinner\nmaterials. The multiple steps mean you don't have to have a toolbox with\nspecific size drill bits, and this drill is backed by a full lifetime\nwarranty. P.when('A').execute(function(A) {\nA.on('a:expander:toggle_description:toggle:collapse', function(data) {\nwindow.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the\nManufacturer The 4 UniBit Step Drill has 12 holes--3\/16-inch to 7\/8-inch hole\nsizes with increments of 1\/16-inch- shank size is 3\/8-inch. Each UniBit step\ndrill has an easy-to-sharpen, non-skid tip which eliminates skidding and the\nneed for center punching; the tip gives sure starts even on curved surfaces.\nThe single-fluted cutting edge that you will find on the UniBit step drills\nhelps assure true round holes and allows greater control. They are constructed\nof industrial grade high speed molybdenum steel and heat treated to assure\nmaximum durability. The UniBit step drill has 3 flatted shanks, which prevents\nslipping in drill chuck. The multiple steps on each UniBit eliminates the need\nto maintain a toolbox full of specific size drill bits. Full lifetime warranty\n--each UniBit step drill is warranted to be free from defects in material and\nworkmanship for the life of the tool, except for damage caused by abuse,\nmisuse, or alteration. See more\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eSave time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size.\u003c\/li\u003e\n \u003cli\u003eMade from industrial-grade high-speed molybdenum steel heat treated for maximum durability. SpeedPoint tip penetrates faster and prevents walking.\u003c\/li\u003e\n \u003cli\u003eIdeal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.\u003c\/li\u003e\n \u003cli\u003eNon-skid tip, no need for center punches. 3-faltted hex shank prevents drill chuck slipping. Drill diameters etched in flute for easy identification.\u003c\/li\u003e\n \u003cli\u003eBacked by a full lifetime warranty.\u003c\/li\u003e\n \u003c\/ul\u003e"}