Professional Axle Thread Restorer Set M16-M27 & SAE with Extension Bar 72255343Package Includes: 14*thread restorers 1*27mm extension bar 1* allen wrench as shown in the picture Specification Material45# steel Sizes included M22*1. 0, M20*1. 25 M20*1. 5 M22*1. 5 M24*1. 5 M24*2. 0 M16*1. 5 M16*1. 0 M20*1 M27*2 3 4 Inches x 20 UNF, 13 14 Inches x 20 UNF, 27 32 Inches x 20 UNF 3 4 Inches x 16 UNF 27mm extension bar 1 2" Square Extension Socket Driver Feature: 1. Thread chaser set is designed to clean or repair spindle thread, axle