3pcs 3124‑1220mm High Speed Steel Cone Step Drill Bit Hex Shank Hole Cutter

About this item

• Feature: 1. Not require center punch, Compared with ordinary twist drill bits, these step drill bits are not easy to break, which can be used for deburring, chamfering, hole opening. 2. 4241 high speed steel construction for wear resistance, high toughness and high strength. 3. 14 inch hex shank allows these drill bits to work with electric drill. 4. Low friction and running temperature, extending service life of drill bits. 5. Widely used in drilling on all kinds of materials such as stainless steel, wood, thin iron, aluminum alloy, moistureproof plate, PVC plate, etc. Specification: Item Type: Step Drill Bit Material: 4241 High Speed Steel Drill Bit Specification: 15 Step: 420mm 9 Step: 412mm 5 Step: 312mm Package List: 3 x Step Drill Bit 1 x Storage Bag Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.Not require center punch, Compared with ordinary twist drill bits, these step drill bits are not easy to break, which can be used for deburring, chamfering, hole opening. 4241 high speed steel construction for wear resistance, high toughness and high strength. 14 inch hex shank allows these drill bits to work with electric drill. Low friction and running temperature, extending service life of drill bits. Widely used in drilling on all kinds of materials such as stainless steel, wood, thin iron, aluminum alloy, moistureproof plate, PVC plate, etc.