[Wide Application]This thread repair kit is for to repair damaged or worn out threads, the drill bit is about 12.4 mm in diameter, this kit helps create a stronger internal thread in soft metals and protects tapped threads against wear and damage, ideal for engine repair and other automotive applications. [High & Intimate Design]Twist drill bits are used 135° top angle design with stronger metal penetration, HSS taps have precise threads, the drill bits quickly create room for the installation tools to smoothly fit the inserts that repair your old threading and the breaking tool. [Excellent Material]The thread repair tool kit made from stainless steel wire for strength, wearproof and durability which can increase connection strength and fatigue resistance, the handle is made of high-quality rubber, ergonomically designed, non-slip and easy to grip, giving the hand a comfortable feeling. [Package Details Introduce]15pcs thread repair tool kit, all made according to professional standard, includes 1 twist drills, 1 taps, 1 installation tools, 1 breaking pin tools, 10 thread inserts, 1 hexagon wrench, and a storage box, allow you to have a smooth repairing experience. [Quick Storage & Portable]Thread repair tool kit with a storage box, each accessory has its place, for easy transport and storage between jobs, the twist drill bits and taps engraved with text marks to help you quickly organize and use, which is convenient for your work., Weight: 1.07144659332 Pounds, Manufacturer: NONDK