Usage Tips: 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 for reliable all-weather indoor and outdoor performance. One-Handed Operation - Dual-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 for grease gun operation. WIDE APPLICATIONS - Compatible with 14mm standard, micro, battery-powered, pneumatic, and manual grease guns and fittings. Fits M6/M8/M10/M12/M14 grease fittings. Easily replaces existing grease couplers. Material: Iron Color: Chrome Package Contents: 1 x Grease Nipple Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.