Sealey Glow Plug Thread Repair Set 33pc Features: Fast and effective remedy for damage to cylinder head glow plug threads. Set includes tools for the precise insertion of threaded inserts into the head and features a unique tap guide system to ensure their correct alignment. Includes four sizes of threaded adaptors suitable for common sizes of glow plug. Supplied in storage case. Technical Details: • Fast and effective remedy for damage to cylinder head glow plug threads. • Set includes tools for the precise insertion of threaded inserts into the head and features a unique tap guide system to ensure their correct alignment. • Includes four sizes of threaded adaptors suitable for common sizes of glow plug. • Supplied in storage case. • Model No. VS311 • Model No. VS311 Additional Information: • Fast and effective remedy for damage to cylinder head glow plug threads. • Set includes tools for the precise insertion of threaded inserts into the head and features a unique tap guide system