Step Drill Bit Faster Drilling Step Drill Bit High Speed Steel Drill Bit Impact Driver Bit Set for Cutting Holes On Sheet Metal Wood Steel Aluminum for Electrician Mechanic 10PCS Golden

?JUST FOR BETTER WORK?-JIEZEE- 10PCS Step Drill Bit for Cutting Holes On Sheet Metal Steel Aluminum Wood! ? PRODUCT DESCRIPTION ?Material: Tungsten steel Hard Carbide ?Cutter pattern: double cut ?Suitable for: Drilling, Metal Craving,Engraving, Polishing ?Dimension: 3*6mm/0.12*0.24 inch (Approx.) ?Suggested RPM:25000-50000, Max RPM 70000. ? HRA ? 85 ?Quantity: 10pcs/Set in a storage box ? FEATURES: ?Used to process all kinds of metal (including hardened steel) and non-metal (such as marble, jade, bone) ? Processing hardness up toHRA85 ?Easy to use: from right to left direction of cutting uniform movement ? High production efficiency, can reduce labor intensity ?Can produce high precision mold cavity with high precision ? Widely used in the pneumatic or electric tools ? APPLICATIONS: ?The grinding head is widely used in steel machinery, aviation, automobile, shipbuilding, chemical, carving and other industrial sectors. ? Used for fine processing of all kinds of metal mold cavity, such as processing shoe mold and so on. ? Fits for all kinds of metal and non-metal process engraving, such as die carving, process gift trimming. ? Suitable for all kinds of mechanical parts of the chamfering rounding and groove processing, pipe cleaning, hole surface finishing machinery parts, such as machinery factory, repair factory etc. ? Great for the repair of the impeller runner, such as an automobile engine factory. ? PACKAGE INCLUDES: ?10 x Carbide Rotating Burrs ?1 x Plastic Storage Case. ? NOTICE: ? Please allow a bit error due to manual measurement. please make sure you do not mind before you bid. ? The color may have different as the difference display, pls understand.