Store New Arrivals Add to Favorite View Feedback Contact Step Drill Bit Set for Metal Sheet Heavy Duty, 5-Piece Premium M2 HSS Step up down Drill Bits Stepper Unibit for Steel Hole, 50 Sizes from 1/8 to 1-3/8 Inches Description Item model number B106BK Material High Speed Steel Cutting Angle String 118 Degrees Product Dimensions 5.91 x 5.31 x 1.57 inches; 1.23 Pounds Shank Type Hex Country of Origin China Cutting Diameter 1.38 Inches Finish Type Black Nitride Durable High-Speed Steel: Made from Premium M2 high-speed steel with a black coating for enhanced durability and sharpness, this drill bit reduces friction, resists heat, corrosion, and rust, extending cutting edge life even at high temperatures Versatile Multi-Diameter Design: The set includes 50 sizes with multiple hole diameters, allowing for convenient drilling of various hole sizes using a single step drill?ideal for DIY projects at home, in the garden, or in the workshop 118 Split Point Tip Two-Flute Design: Featuring a split point tip at 118 degrees for better wear resistance, the two-flute design ensures smoother cutting and efficient material removal, compatible with electrical, cordless, or high-impact drill presses Convenient Storage and Marking Tool: Comes with a heavy-duty aluminum case for safe storage and an automatic center punch for precise marking. The punch delivers a high-impact strike and features an adjustable cap for regulating force Engineered for Stability and Efficiency: The Lichamp step drill is designed to minimize vibration and noise during use, providing a smoother and quieter drilling experience, thus improving work efficiency and overall safety Typical Data / Physical Properties: Brand: Lichamp Thread Style: Right Size: 50 Sizes from 1/8 to 1-3/8 inches Meterial: M2 High Speed Steel Finish Type: Black Nitride Color: Black Angle Point: 118 Degree Flute Type: Straight Shank Type: Triangle Round Shank Case: Aluminum Case Environment: Indoor and Outdoor Step drill bits size: #1: 1/4" to 1-3/8" 10 Steps (1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8") #2: 3/16" to 7/8" 12 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16",7/8") #3: 1/4" to 3/4" 9 Steps (1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4") #4: 1/8" to 1/2" 13 Steps (1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2") #5: 3/16" to 1/2" 6 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2") Drilling Material: Sheet metal Wood chips Board Aluminum alloy Plastic plates Features: Genuine M2 HSS with black nitride ensures durability and sharpness which can reduce the friction and run cooler. Drills holes of various sizes without changing bits, Smoother and rounder holes, Prevents metal scurf from flying around for improved safety. 118 degrees split point tip provides faster cutting and prevent sliding while increasing the wear resistance. Double flutes design allows the particles escape easily for a clean drilling operation. Great for sheet metal, aluminum sheets, wood chips, plastic and wood board. It's a perfect choice for DIY and engineering use. Come with aluminum case for easy storage and organizing. Maintenance Tips: 1. Not compatible with hammer drill. 2. Please do not set drilling speed too high to avoid damages to cutting edge. 3. It is recommended to oil the bit before every use. 4. Please drill a smaller hole to make drilling smoother. ABOUT US We offer the best prices around on high quality products. 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