LOCK AND SEAL – Grease coupler jaw design enables easy connection to grease fittings. Reinforced jaws and high-quality sealing gaskets ensure long-lasting, stable performance with no leaks even at 17,000 PSI. HIGH QUALITY – Made of durable refined iron for reliable all-weather indoor and outdoor use. ONE-HANDED OPERATION – Dual-handle anti-slip design and retractable mechanism allow for convenient one-handed operation. When locked onto the grease fitting, it stays open, freeing both hands for grease application. WIDE COMPATIBILITY – Fits standard 14mm grease fittings, as well as M6, M8, M10, M12, and M14 grease fittings. Compatible with battery-powered, pneumatic, and manual grease guns. Easily replaces existing grease couplers. COLOR: Chrome MATERIAL: Iron PACKAGE CONTENTS: 2 x Grease Nipples NOTE: Color may vary slightly due to screen settings and lighting conditions. MEASUREMENT TOLERANCE: ±1–3 cm.