These is a Plug Terminal for the O.S. MAX FR7-420 SIRIUS-7 Engine - OSMG1307 FEATURES: Metal construction INCLUDES: One Plug Terminal for the O.S. MAX FR7-420 Engine REQUIRES: Installation onto the glow plug COMMENTS: This part snaps onto the glow plug. The Plug Cable, OSMG3131 attaches to it. Seven of the plug terminals are needed, one for each cylinder. This part is also available in the Cable Set, OSMG3130. In order to wire the entire engine, (6) Cable Sets, OSMG3130 and (1) Booster Terminal Kit are needed. dcw 11/23/10 ir/jxs