Trailer Bleeder Press Fit Reservoir CapBoat Trailer Adapter. Designed to press fit into the 3 / 4" tops of the reservoirs recessed in the tongues of Marine trailers (Motive Products - Model 1130)

Boat Trailer Adapter.  Designed to press fit into the 3/4" tops of the reservoirs recessed in the tongues of Marine trailers. Many trailer brake systems do not have a threaded reservoir cap.   Rather the cap is just a press fit cap.   The model 1130 bleeder adapter is designed work with those trailers.    The picture shows a detail view of the adapter cap.   This cap comes with kit 0130