General description The HSS Twist Drill Bit set includes 13 pieces ranging from 1.5mm to 6.5mm, designed for drilling into wood, metal, and plastic. Each bit features a 135° cutting angle for efficient and smooth drilling. Technical specifications Material: High speed steel with titanium coating Bit sizes: 1.5 mm (1/16"), 2 mm (5/64"), 2.5 mm (3/32"), 3 mm (7/64"), 3.2 mm (1/8"), 3.5 mm (9/16"), 4 mm (5/32"), 4.5 mm (11/64"), 4.8 mm (3/16"), 5 mm (13/64"), 5.5 mm (7/32"), 6 mm (15/64"), 6.5 mm (15/64") Compatibility and accessories Compatible with power tools, screwdrivers, and standard drill chucks 1/4" hex handle for easy and safe bit replacement Usage Ideal for drilling into wood, metal, and plastic Designed for quick penetration with minimal pressure Thread grooves effectively remove chips and dirt during drilling