[Industrial Steel Material]This deburring external chamfer tool is made of steel with high strength and hardness for durability and rust resistance. 3 steel cutting blades have strong cutting and repairing capabilities for cleaner and more effective burr removal. [Efficient to Remove Burr]Our hex shank remove burr tool is safe and easy to shave the outer edges of screws flat. Just attach it to the drill bit and gently on the screw head. It simplifies the repair process and ne need to use hard-to-find hardware. [Quick Repair Screws]Our thread burr remover tool is quick to repair bolts and tighten nuts. It is easy to repair screws, saving time and energy. [Easy to Install]This tool adopts industrial design and more refined production technology, easy to install and suitable for all types of drilling rigs. [Widely Uses]This screw deburring chamfering drill bit is widely used for materials, like stainless steel, hard steel, mild steel, aluminum, copper, fiberglass, wood, brass, plastic. Please note: the physical Some color difference or difference, does not affect the use, please do not mind, thank you! Colour:black+blue Material: steel Package Contents: 4 x Deburring External Chamfer Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.