Step Drill HSS-E55 (Cobalt 5%) -Tialn Coated-3-Flat Shank

Step Drill HSS-E55 (Cobalt 5%) -Tialn Coated-3-Flat Shank. Self-Centering Design: Cross-point sharpening with thinned tip allows easy self-centering on smooth surfaces and reduces axial effort. High-Speed Steel with Cobalt: HSS substrate enriched with 5% Cobalt for superior heat resistance, toughness, and cutting acuity. Heavy-Duty Performance: Optimized for high-speed, heavy-duty drilling of high-strength and stainless steel sheets. Customization Available: Shank and product package can be customized according to specific requirements.