The foldable design allows it to be inserted through the spark plug hole and air chamber When the thread is pulled up through the spark plug hole, the rear faucet repairs the damaged thread. 14 mm thread straightening tool for five-wire spark plugs The thread area and thread of the extension tool are clean threads. When passing through the spark plug hole, the damaged thread can be repaired. colour:Silver Material:Metal Package Contents: 1 x Back Tap Thread Repair Tool Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.