1、SMOOTH EDGE: Each edge is smooth, hex shank can be tightly connected to chuck. Quickly slap it into your hand drill and start repairing work pieces. 2、EASY TO USE: Simplifies the repair process, can reduce repair time. Simple operation, using the lowest speed on the drill bit, and then slightly applying pressure to remove the burr. 3、WIDELY USED: Suitable for almost kinds of chuck drills. Effective on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, plastic. 4、PORTABLE DESIGN: External chamfer deburring tool is compact and lightweight, which means the tool is easily carried in your tool pouch. 5、EXCELLENT MATERIAL: Deburring external chamfer tool is made of Cr12MoV, which is durable, impact resistant, not break, wear resistant, corrosion resistant, not deformed and not rust. Item Type: External Chamfer Tool Material: Cr12MoV Product Size: Approx. 5.2 x 3 x 3cm / 2.05 x 1.18 x 1.18in Use: Deburring external chamferer Product Style: Hex 3 slot Weight: 114 g / 4 oz(approx.) 2 x External Chamfer