- FOCSTOL 5-piece Drill Bit Set, 8mm diameter, with quick-change hex shank - Industrial tungsten carbide tip for drilling hard and soft materials - Suitable for wood, plastic, PVC, tiles, ceramic, marble, glass, cement, and concrete (avoid rebar) - Cross head reduces wandering and improves stability during drilling - Spiral groove facilitates chip removal and improves efficiency - High-strength steel body for long service life - Compatible with electric, cordless, and bench drills; can also be used with angle grinder with chuck adapter - Total length of each bit: 79mm; working depth: 47mm; shank diameter: 6.3mm - Perfect for DIY projects, renovations, and professional use in construction and carpentry