The All-Purpose Step Bit Kit features 4 commonly used step bits, with dual spiral fluting to help pull the step bit through material for faster cutting. Titanium Nitride coating extends the life of the cutting edge. Convenient to use with an impact driver and drill, the 1/4-Inch hex shank provides a firm, positive grip. Kit comes in a rugged case that includes a convenient oil bottle for bit lubrication and longevity.Features Titanium nitride coating dissipates heat for longer bit life Rugged case snaps shut with custom inserts for each bit and oil bottle All-Purpose Step Bit Kit with 4 common step bits sizes (1/2, 3/4, 7/8, and 1-3/8-Inch) cuts holes in wide variety of DIY applications and materials (up to 16 gauge steel, plastic, aluminum, wood) Kit comes with a convenient 1-Ounce oil bottle for lubrication between cuts to prolong step bit life TiN Coating, Impact Shaft, Dual Spiral Fluting, Oil Bottle, Custom Inserts in Protective Case Split point tip quickly starts hole cuts and prevents drifting when pressure is added Total of 37 hole sizes 2 spiral flutes on each step drill bit remove chips and help pull the bit through material for faster cutting 1/4-Inch hex shank for firm, positive grip in impact driver and standard drill Warnings Always ensure that you and persons in the vicinity wear approved eye protection. Read and follow safety instructions in power tool owner's manual. Number of Holes: 37 Total Size: 1/8 in to 1-3/8 in (3.2 to 34.9 mm) Shank Type: 1/4 in Hex Coating: Titanium Nitride (TiN) Flute Type: Dual Spiral Material: High Speed Steel Depth: 8.75 in Overall Length: 8.75 in (22.2 cm) Overall Width: 2.75 in (7 cm) Overall Height: 4.9 in (12.3 cm) Weight: 1.5 lbs Material Compatibility: Up to 16 gauge steel, plastic, aluminum, wood Tip Type: Split Point Country of Origin: China DownloadsSafety Data SheetVideo DownloadSafety Data SheetSafety Data SheetSpec Sheet