Made of extremely hard alloy steel with high strength and hardness; durable, rust-proof, and resistant to corrosion; designed for long-term use Size: Fits 1/8 in. (3 mm) to 1 in. (25 mm); operates with full lubrication and up to 400 RPM EASY TO USE: This exterior chamfering tool simplifies deburring on the outer edges of flat bolts. Attach to a drill and lightly press on the bolt head; quickly prepares nuts for tightening Safe and efficient: High-strength, high-hardness drill bit easily cuts the outer edges of bolts, pipes, and rods, removes burrs, and repairs damaged bolts without hand injury, sparking, or burning; streamlines maintenance tasks Wide range of applications: Effectively machines stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, and plastic, with or without threads Color: Black + Blue Material: High-speed steel Package Contents: 2 x Chamfer Tool Note: Light reflection and differences in display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.