• Kit is designed to repair glow plug threads for a wide range of diesel engines • It professionally and permanently replaces the threads on modern vehicles which have very little space and access to glow plugs • The Kit includes self-guided reamers and taps with no need for glue or thread seal • 4 of each thread repair inserts are included • Sizes: (Inserts are also available separately) #7731 - M8 x 1.00 (Short) #7732 - M8 x 1.00 (Long) #7733 - M9 x 1.00 #7734 - M10 x 1.00 #7735 - M10 x 1.25