The vice section grips the rail, and the flat section supports the antenna. The flat section can also be bolted to a flat surface, instead of to the rail grip.
Water Pump Repair Kit - INCLUDES UPPER AND LOWER HOUSINGS, GASKETS, PLATE, SEALS, KEY AND IMPELLER . FITS 150 EFI FOURSTOKE 1B905505 AND UP, 75-115 EFI FOURSTROKE 2B094996 AND UP