Shutoff Valve 1" FNST Swivel x 1" MNST are made of hard-coated aluminum and have quality polymer ball and seat/seal mechanisms. Front and rear seats give you smooth waterways, creating less friction loss. Shut off handles are cast aluminum or composite material. Designed to accept a pistol grip when needed. Ball Shutoff Valve 1" FNST Swivel x 1" MNST Ball Valve, .75" Waterway.