6.8mm (6.8D*60L) Micro grain solid Tungsten carbide CNC Internal Cooling Drill Bits HRC50,Carbide Drill bits For Metal working

• Unit Type: piece
• Package Weight: 0.15kg (0.33lb.)
• Package Size: 12cm x 3cm x 3cm (4.72in x 1.18in x 1.18in)

Cheap bit pic, Buy Quality bit vga directly from China bit tracker Suppliers: 6.8mm (6.8D*60L) Micro grain solid Tungsten carbide CNC Internal Cooling Drill Bits HRC50,Carbide Drill bits For Metal working

M6.8*60L Carbide Drill Bits
100% Brand new,never used   Coating: TiAIN   Used: stainless steel,cooper,cast iron,mould steel,etc.   - HRC50  Carbide 2 flutes Twist Drills,CB carbide material, ALTIN  coating,can resist the high temperature of  700-800 d egree.   Item\'s color might be different from the picture because of the aberration Features: 1.These long-lasting bits are made from high quality tungsten steel for a precise,easy experience 2.These carbide  drill design for CNC/PCB Milling Machine,and diminished drill flux. Mainly applies to  copper, aluminum,fiberglass,carbon,circuit board,wood and most plastic including acrylic 3.Specifically designed for trace isolation patterns cutting on circuit boards,these PCB drill will give a  clean burr free cut 4.Please note,These bits are Very Sharp and never used and Each Piece has Been Cleaned 5.Constructed of Industrial Grade Solid Tungsten Carbide 6.Tungsten steel blade,welded iron body 7.Cutting edge symmetry, is co