General description This Laser Tools Glow Plug Threaded Insert Kit has been developed to facilitate the repair of engine glow plug threads with minimal dismantling required. The in-house designed insert fitting tools provide optimal access to recessed glow plugs while ensuring proper fitting of the inserts. Technical specifications Thread size: M9 x 1mm Includes: 5 threaded inserts, fitting tool, reamer, and taps Fitting bolts: 10.9 High tensile for longer service life Other information Made in Sheffield EU Registered Design Other size kits available: Laser Part No. 6777 (M8 x 1mm), 6779 (M10 x 1mm), 6780 (M10 x 1.25mm)