Convenient for repairing damaged spark plugs.

4 threaded sleeves with different depths to meet maintenance needs.

Leads good internal threads into metal and protects tapped threads from wear/tear and damage.

Tap Material: HSS
Tap: M10x1.0 with external Hex. in 10mm
Tap length:70mm
4pcs threaded sleeves in M8x1.0 with length(mm) 9.5, 11.5, 12.7, 19