Chtools Taper Shank Spade Drill Cutting Speed with HSS Insert Drill

Chtools Taper Shank Spade Drill Cutting Speed with HSS Insert Drill. Wide Drilling Range: 16 holders accommodate drilling diameters from 9.5mm to 114mm. Versatile Insert Compatibility: One holder fits 3-5 different insert specifications for flexibility. Superior Efficiency: Comprehensive drilling efficiency is 2 times higher than ordinary twist drills. Deep Hole Machining: Cutting depth reaches 2-20 times the drill diameter for deep-hole applications. Hard Material Capability: Cuts materials with hardness up to HRB300 including high-nickel and stainless steel. Imported High-Quality Material: Constructed with imported powder HSS and carbide for better endurance. Free Grinding Service: Features free grinding capability for extended tool life and simple operation. Broad Machine Compatibility: Suitable for NC drilling machines, CNCs, lathes, and boring & milling machines.