General description This fantastic countersinking device is perfect for boring 90-degree holes in wood and soft metals when preparing countersunk screws and fasteners. It features five-blade chamfering, deburring, and countersinking, with heat treatment through high-frequency quenching to improve hardness. The high-quality, non-slip, sturdy shank provides greater comfort and convenience, finished with an anti-fall treatment. Technical specifications Sizes: 12mm, 16mm, 19mm Total length: 45mm for all sizes Handle length: 21mm (12mm and 16mm), 24mm (19mm) Chamfer diameter: 12mm, 16mm, 19mm Width of the Side Handle: 6.35mm for all sizes Weight: 20g (12mm), 28g (16mm), 35g (19mm) Outer Edge Angle: 80-90° Type shank: hexagonal shank round rod Quantity: 3 packs Scope of application Suitable for chamfering wood, plastic, and soft metals