Professional equipment Repair set for repairing spark plug threads IDEAL FOR SPINNING MACHINES ROTARY MACHINES POWER MACHINES ROTARY MACHINES POWER SAWS DECKERS POWER SPINTERS POWER SPINTERS The set includes 4 thread sizes: M14 (diameter) x 1.25 x 9.5 mm M14 x 1.25 x 12.7 mm M14 x 1.25 x 17.5 mm + spanner Code: 18-630