LOCK AND SEAL - Grease coupler jaw design allows for easy opening and closing of the grease fitting. Reinforced jaws and high-quality sealing gaskets ensure long-lasting, stable performance with no leaks, even under extreme pressure. High Quality - Constructed from high-quality refined iron, suitable for all-weather indoor and outdoor use, providing stable and reliable operation. One-Handed Operation - Double handle anti-slip design and smooth retract mechanism enable one-handed operation for easy installation and removal. Once locked onto the grease fitting, it remains open, freeing both hands to operate the grease gun. WIDE APPLICATIONS - Compatible with 14mm standard, micro, battery, pneumatic, manual grease guns and fittings. Fits M6/M8/M10/M12/M14 grease fittings. Easily replaces existing grease couplers. Color: Chrome Material: Iron Package Contents: 2 x Grease Nipples Note: Light reflection and differences in display screens may cause the color in the image to vary slightly from the actual product. Measurement may vary by +/- 1-3 cm.