The T-H Marine Boat Lower Unit Gear Lube Pump makes gear lube changes clean and easy. Designed to work with most outboards and stern drives, it simplifies maintenance while helping extend the life of your lower unit components. Fits 32 oz gear lube bottles Compatible with most outboard drain screws Includes Yamaha and Tohatsu adapter 3/8" to 3/16" screw compatibility Ergonomic pump handle for easy use Promotes optimal gear lube flow Helps prevent mess during maintenance Essential tool for lower unit upkeep