Description: This highly useful 25-piece thread repair kit is the perfect solution to a damaged or stripped tapped hole. Suitable for M6, the kit creates a stronger internal thread in soft metals and protects tapped threads against wear and damage. Re-thread tool full set include: insert installations, wire thread inserts, twist drill bits, thread taps, lug breaking tools. Ideal for restoring damaged threads, suitable for engine repair and other automotive. Coarse Thread Inserts Coil Size: M6x 1.0x 8.0 mm (20pcs thread). Material: HSS High Speed Steel. Package Includes: 1 Set Thread Repair Insert Kit