*those threads designed to start and remove carbon and dirt or straighten damaged threads in spark plug hole.
*use with ratchet handle and deep socket or suitable wrench.
Raya Enterprise Ltd.
Add: No.528-1, Section 1 ,Shenlin Road, Daya District, Taichung City 42865, Taiwan.
Tel: +886 4 2569 3636
Fax: +886 4 2569 3638