New HSS-Co Cobalt Spiral Grooved Step Drill Bits 1/4" Hex Shank Wood Metal Cone Drilling 3-12mm Hole Saw M35
Cheap step drill, Buy Quality step drill bit directly from China cone drill Suppliers: Free shipping New HSS-Co Cobalt Spiral Grooved Step Drill Bits 1/4" Hex Shank Wood Metal Cone Drilling 3-12mm Hole Saw M35
100% brand new and high quality.
Made from HSS-Co, heat treatment to it, high hardness, high wear resistance, high toughness, high bending strength, sharp edge, the best choice for processing stainless steel, better than ordinary step drill.
Unique step structure, a drill can punch out a variety diameters of holes.
Does not need center punch to assist it, compared with ordinary hemp flower drill, it is stabler and difficult to be broken.
It has these functions that hemp flower drill does not have, such as burrs removing, chamfering, punching elliptic hole, etc.
It is suitable for being installed on the pistol drill and bench drill, applicable for punching on these harder workpieces, such as stainless steel, carbon steel, aluminum plate, iron plate, etc.
Please water it for cooling while punching so that can prolong its lifetime, rotation rate from 250 to 400 is recommended.
Handle type:Hex handle
|Type||Core Drill Bit|
|Package Weight||0.1kg (0.22lb.)|
|Package Size||5cm x 5cm x 5cm (1.97in x 1.97in x 1.97in)|