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 provide long-lasting, stable performance with no leaks, even under extreme pressure. High Quality - Constructed from high-quality refined iron for reliable performance in all weather conditions, suitable for both indoor and outdoor use. 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 for grease gun operation. WIDE APPLICATIONS - Compatible with 14mm standard fittings as well as micro, battery, pneumatic, and manual grease guns. Fits M6, M8, M10, M12, and M14 grease fittings. Easily replaces existing grease couplers. Material: Iron Color: Chrome Package Contents: 1 x Grease Nipple Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.