60 Pcs Ti Plated Twist Drill Bit Set, 1 to 5.79 mm HSS Drilling Tools with Black Iron Box, Professional Metal Wood Alloy Machining Kit for Workshop Home Repair

Produktbeschreibung

Surfaces Treatment: Ti nitride coating with 2800 HV micro hardness; Reduces friction coefficient by 35% when drilling stainless steel 304 (2-5 mm thickness); Extends tool life 3× compared to standard HSS bits in automotive part production lines Heat Treated Performance: HSS substrate hardened to 63-65 HRC; Maintains cutting edges stability at 300°C continuous operate; Processes tool steel (HRC 45-50) and spring steel components in CNC milling applications Deep Hole Optimization: 30° spiral angle with polished flutes (depth 0.5-0.8 mm); Efficient chip evacuation in 50 mm+ depth drilling for aluminum engine blocks and hardwood timber beams; Prevents bit binding in manual bench drill operate Multi Machine Compatibility: 41-98 mm length range fits drill presses, lathe tailstocks and base drills; Hex shank adapters included for impact driver use in steel frame construction and machinery maintenance tasks Industrial Grade Organization: Reinforced iron casing with foam substrate insert; Withstands 50 kg compression during jobsite transportation; Numeric size labeling enables quick selection for jig boring operate and electronic enclosure fabrication