6 pcs Step Drill Bit Set, HSS Unibit Step Drill Bit and Automatic Center Punch, Double Cutting Blades, Hex Shank Step Bits for Metal with Aluminum Case

Material: High Speed SteelColor: Black and GoldShank Type: Hex shankQuantity: 6 pcsPackage: Custom Aluminum Case【Package Includes】1 x 6 step bit (1/4" shank; 3/16" - 1/2")1 x 13 step bit (1/4" shank; 1/8" - 1/2")1 x 10 step bit (3/8" shank; 1/4" - 1-3/8")1 x 12 step bit (3/8" shank; 3/16" - 7/8")1 x 9 step bit (3/8" shank; 1/4 " - 3/4")1 x Automatic center punch【Note】Wear protective gloves, glasses, masks, etc.

when opening holes.To prevent rusting and prolong the service life, please wipe water off the drill bits after use, and keep them dry.We value our customers' experience, if you have any questions, please contact us, we never stop improving our products.