Scope Spark Plug Repair Kit – High-quality, brand-new spark plugs, taps, and clamping inserts. Designed for 14mm applications. If you are unsure of the size, please measure before use. Note that specifications may vary slightly. This is a high-performance conversion accessory.EXQUISITE WORKMANSHIP – Spark plug thread repair kit. A reliable tool set for repairing damaged spark plug threads and extending spark plug life. Convenient and practical, improves efficiency during spark plug maintenance.FOUR SIZES INCLUDED – The spark plug thread repair tool comes with four insert sizes compatible with various 14mm threaded spark plugs. Spark plug insert thread diameter: 14mm (0.55 inches).HIGH-QUALITY MATERIAL – These accessories are constructed from hardened carbon steel for strength and durability. Spark plug taps are easy to maintain, helping reduce replacement costs and extend the life of your automotive spark plugs.EASY TO INSTALL – The M14 spark plug thread repair kit is user-friendly and simple to operate. Package includes: 1 thread tap, 4 spark plug inserts.Note: All measurements are manually taken; please allow a tolerance of 1–3 cm. Due to lighting and display differences, slight color variations may occur. Actual product may vary slightly from images shown. Delivery quantity based on main product image.