Feature: Quickly repairs damaged bolts and tightens the nuts in place. Simplifies the repair process, eliminates the need to replace expensive or hard-to-find hardware. This tool works by way of a shearing metal layer by layer. Simple operation, using the lowest speed on the drill bit, and then slightly applying pressure to remove the burr. Effective on Stainless Steel, Hardened Steel, Mild Steel, Copper, Brass, Aluminum, Fiberglass, Wood, Plastic. High strength and hardness. Safety conscientious design means no cut hands, no sparks, and no burns. Convenient to use. Durable in use. Specification: Material: Stainless Steel Color: Silver Fits Size: as picture Package included: 2 x Deburring External Chamfer Tool Note: Please allow 1-3mm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.