The All Purpose Quick Release Step Bit Set contains three commonly used bits sized 1/2-Inch, 3/4-Inch, and 7/8-Inch plus cutting oil/lubricant. These Dual Spiral Flutes help pull the step bit through the material for faster cutting. The aluminum titanium coating is 10 times more durable than steamed black oxide for longer bit life. Impact rated, the 1/4-Inch hex shank provides a firm, positive grip and allows quick and convenient usage with an impact driver and a drill. The compact, modular case is designed to nest neatly within MODbox™ toolboxes and on the MODbox™ Case Adapter Side Rail Attachment.Features Double spiral flute removes chips for faster cuts and drilling Fast-starting, non-walking drill tip Impact rated shaft allows for use with impact drivers and standard drills Quick-release, 1/4-Inch hex shank provides a firm, positive grip and won't spin out in the drill The compact, modular case comes with cutting oil and is designed to nest neatly within MODbox™ toolboxes and on the MODbox™ Case Adapter Side Rail Attachment For use on steel (up to 16 gauge), wood, plastic, and aluminum Step bits are coated with aluminum titanium nitride and are 10 times more durable than steamed black oxide coating for longer bit life Laser markings are easy to read for quick size identification Modular Case, Aluminum Titanium Nitride Coating; Dual Spiral Fluting; Cutting Oil Included NoteRead and follow safety instructions in power tool owner's manual.WarningsAlways ensure that you and persons in the vicinity wear approved eye protection. Type: Step Drill Bit Size: 1/8" to 1/2" (3.2 to 12.7 mm); 1/4" to 3/4" (6.4 to 19.1 mm); 3/16" to 7/8" (4.8 mm to 22.2 mm) Increment: 1/32" (0.8 mm); 1/16" (1.6 mm) Bits Included: 3 Pieces Bit Sizes: 1/2 in, 3/4 in, 7/8 in Shank Size: 1/4 in Hex Shank Type: 1/4" Hex, Quick-Release, Impact Rated Flute Type: Dual Spiral Coating: Aluminum Titanium Nitride (AlTiN) Material: High Speed Steel Application: Multi-Material Drilling Durability: 10x more durable than steamed black oxide Number of Holes: 13, 9, and 12 Height: 1.8 in Width: 3.7 in Depth: 9.25 in Overall Height: 2.8" to 3.4" (7.1 to 8.6 cm) Overall Length: 0.5" to 0.88" (1.3 to 2.2 cm) Overall Width: 0.5" to 0.88" (1.3 to 2.2 cm) Material Use: Steel (up to 16 gauge), wood, plastic, aluminum Country of Origin: China DownloadsSafety Data SheetVideo DownloadSpec Sheet