The Black Diamond Right Angle Grease Coupler is built for low-clearance and limited-access grease points, using a narrow design and right-angle discharge to reach fittings in tight spaces. Made to work with hand-operated grease guns, it provides a secure connection with a polyurethane seal that fits tightly on grease fittings for cleaner, more controlled greasing. Threaded 1/8" NPT and rated for a 1,000 psi working pressure.