Description
This heavy-duty large-size grease-gun coupler is engineered specifically to mate with oversized button-head grease fittings, providing a secure, leak-free connection that ensures grease is delivered into the joint — not lost to spray or blow-back. The large “button” face of the fitting demands a coupler with a wide, flat sealing surface; this model accommodates that requirement by offering a robust die-cast or steel body, precision-machined sealing face, and an inlet thread to attach your grease-gun or hose.