Description:  Round Type Thermal Friction Hot Melt Short Drill Bit M3 M4 M5 M6 M8 M10 M12 M14 Flow Drilling Tungsten Carbide Friction Drill.     Specification:  Material: Tungsten Carbide.  Color: Silver Type: Flat Type.  Size: M3 M4 M5 M6 M8 M10 M12 M14.     Features:  1. Round type frictiondrill (standard type frictiondrill): frictiondrill penetrate the workpiece while drawing the bushing to form a convex ring. Suitable for thread sealing or nut washer.  2. Made of tungsten carbide, durable to use.  3. Fits for 0.5-12.5mm thickness material, can process steel, stainless steel, titanium, aluminum, copper, copper, brass, aluminum alloy and etc.  4. Fits for drill lathe, milling machines, NC/CNC machining center.     Package Included:  1 x Hot Melt Short Drill Bit Round Type Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.