3PCS M35 Cobalt Step Drill Bit 3-12 4-22 6-24 HSS-CO Cone Metal Drill Bit Tool

Features: *Heat treatment to it high hardness high wear resistance high toughness high bending strength sharp edge the best option 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: 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. *Main functions of the product: M35 cobalt containing step drill (HSS CO) is a kind of step drill with high hardness which is mainly used for drilling high hardness steel plates such as stainless steel plates hardened steel plates etc. meeting the requirements of many customers who cannot complete the work with ordinary HSS4241 step drill Specifications: *Material: HSS-Co(HSS M35 5% Cobalt) *Handle type: Hex handle *Handle diameter: 1/4 (6.35mm) *Color: Copper Color (As Pictures Show) *Handle diameter : 1/4 (6.35mm). Handle length:31mm. Hex handle 1/4 (6.35mm). *Edge length: 3-12mm :50mm 4-22mm: 50mm 6-24mm: 57mm (Approx.) *Step diameter : 3-12mm:3/4/5/6/7/8/9/10/12mm 4-22mm: 4/6/8/10/12/14/16/18/20/22 mm 6-24mm: 6/8/10/12/13/14/16/18/20/22/24 mm (Approx.) *Quantity:3pcs M35 step drill is used for opening of stainless steel sheet. The following points need to be noted: 1. When drilling stainless steel holes hand drill and bench drill can be used and plates within 1mm can be drilled with hand drill and plates within 2-3mm can be drilled with bench drill 2. When opening stainless steel holes the rotating speed cannot be fast just a few hundred revolutions 3. During machining it is better to inject water or cutting fluid for cooling which can effectively extend the service life of the bit Package Includes: 3*Step Drill Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.