20pc Micro Mini HSS Drill Set.
*A twenty piece micro HSS Titanium or polish coated drill set
*Supplied in a plastic indexed box with sliding window.
*The specially designed box keeps bits securely in place and dispenses only one bit at a time.
*Sizes0.3,0.35,0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.75,0.8,0.85,0.9,0.95,1.0,1.2,1.3,1.4,1.5,1.6mm *For industrial drilling on aluminium, brass and so on.
*HRC: 64-66
HSS POWDER METALLURGY REINFORCED SHANK TWIST DRILL
*Materials : High speed steel,material M2,W9, Cobalt 5%, Cobalt 8% ;
*Surface treatment: white finish ;
*Point angle : 118 degree,
*Helix: 20-25 degree.
*Cutting : Right hand cutting,
*Used for watch repair and jewelry production.