GROCO 1-1/2" Ball Valve/Seacock Raw Water Strainer Combo [BVS-1500]1 1 2" Ball Valve Seacock & Raw Water Strainer Combo Features: Square hole in handle accepts standard ratchet 1 1 4" sizes and larger include one grease zerk fitting for lubrication (use only with the valve in the open position), and one drain plug The zerk can also be used for draining Space saving design with strainer and integral seacock Just one component to install and just one bilge location to access for winterization and maintenance No inside