This is the 1/4-32 Glow Plug Tap from Harry Higley.

FEATURES: Rethreads and corrects stripped glow plug threads in cylinder head of glow engines Functions with all surface or air glow engines Hardened steel construction

INCLUDES: 1/4-32 Glow Plug Tap

SPECS: Total Length: 2.6" (66.3mm) Length of Threaded Area: 1.04" (26.4mm) Thread Size: 1/4-32

COMMENTS: Order HIGR1110 if glow plug die is needed  

BOX DIMENSIONS: 3.88" W. X .25" H. X 4.13" L. BOX WEIGHT: .04 LBS.