2TRIDENTS 5Pcs Hex Shank High Speed Steel Drill Bit Set - Deburring External Chamfer Tool Fit Size 8-32 Bolt

Eliminate damaged extractor effective on Stainless Steel, Hardened Steel, Mild Steel, Copper, Brass, Aluminum, Fiberglass, Wood, Plastic with the 2TRIDENTS Deburring External Chamfer Tool. Features: Quickly repairs damaged bolts and tighten the nuts in place. Simplifies the repair process, eliminates the need to replace expensive or hard-to-find hardware. Quick Change Twist Drill Bit Set- 1/4 inch hex shank fits into all power tools more easily and securely, especially for locking into the quick-change chuck. Made of extremely hard stainless steel with three shaving teeth, let it has the feature of high strength and hardness for durability. 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.  Safety conscientious design means no cut hands, no sparks, and no burns; Convenient to use Simple design and compact size mean the tool is easily carried in your tool pouch. Quickly slap it into your hand drill and start repairing workpieces. Specifications:Color: SilverMaterial: SteelSize:4mm, 5mm, 6mm, 8mm, 10mm1/4inch(6.35mm)Hex Shank Fits Size:8-32 bolts (.164) up to 3/4inch-10 (.750) - (4mm -19mm) Package Contents:5 * three-point woodworking drill (one each for 4/5/6/8/10mm)1 * chamfer 51x28mm