HSS HSSE Form A Type 60 Degree Spoting Center Drill [Prefabricated Precise Positioning]: This high speed steel center drill bits is mainly used for the prefabricated precise positioning of hole machining, guiding twist drills for hole machi

Tungsten Carbide Drill Through Coolant Drillbits Deep Hole Machining 3D 5D 8D Tool Spirial Chip Removal Groove Effective Prevention of Chip Accumulation Excellent Cutting Edge Design Make Tool Machining and Chip Removal More Stable Diameter

1/2 inch 12.7mm Dia Reduced Shank HSS Twist High Speed Steel Drill Bit Widely used to Drill the Metal, Aluminum Alloy, Copper, Stainless steel and Wood Drilling is Processed by Quenching to Ensure Excellent Performance The Large Spiral Angl

HSS Drill Bit M35 DIN338 Cobalt Jobber High Speed Steel Drilling Tools Set 1-13 mm 5% Cobalt Content Perfornance in Hard Steel Drilling Application Efficient Design Lead to Remove Chips Particles More Easier and Faster Beautiful and Remarka

HRC55 Cemented Carbide Tungsten Steel Twist Drill Bit