The KTI Quick Connect 90 Degree Grease Coupler, No. KTI73958, features a narrow coupler design that allows greasing in hard to reach points. It has a three jaw construction in which the coupler jaw fits perfectly onto zerk fittings and stays on without having to keep the unit hand pressed. The coupler design allows for high pressure use up to 4,000 psi and the 90-degree access is useful for greasing fittings in low height vehicles and shoulders. It fits all standard hand operated grease guns and is covered by a one-year warranty.