5Pcs HSS Square Drill Bit Kit | 1 / 4in 5 / 16in 3 / 8in 7 / 16in 1 / 2in Sizes | Heat - Treated Woodworking Countersink Bits for Electric Drills/DIY Projects/Construction

Produktbeschreibung

5-Piece Size Options - Square drill bit kit includes 1/4in, 5/16in, 3/8in, 7/16in and 1/2in sizes (6.4mm-12.7mm) with organized storage box. Suitable for various woodworking and construction needs. Hardened HSS Material - High-speed steel square countersink bits feature heat-treated construction for 30% longer lifespan. Maintains precise edges through 500+ drilling operations in hardwood. Labor-Saving Design - Square chisel bits work with electric drills or hammers to create uniform mortises 50% more effectively than manual chiseling. Ideal for door hinge installation and furniture making. Multi-Surface Performance - Industrial-grade bits drill through oak, pine, MDF and plywood without splintering. Also works on drywall for electrical box installations. Worksite-Ready Kit - Each HSS square drill bit comes with protective storage case. OSHA-compliant for construction sites and commercial woodworking shops.