LOCK AND SEAL】FIXSMITH professional grease gun coupler features an innovative exclusive patented design, delivering utmost safety and reliability with its exceptional quality assurance. Its reinforced 3 jaws and unique sealing gaskets ensure a secure connection to Zerk fittings, preventing grease gun tips from detaching and effectively eliminates any risk of leakage even under high pressure of up to 10000PSI. | ROBUST HIGH QUALITY】Grease gun locking is constructed with galvanized alloy steel, ensuring durability and strength. The non-slip handle provides a secure grip during use. These high-quality tips offer exceptional performance and are designed to withstand all-day grease jobs in the workshop or garage. | SIMPLE OPERATION】Grease gun coupler tips with a non-slip handle, its 360-degree rotatable function makes it more convenient for one-handed operation. Operation Steps : Please press the matte handle while greasing and reinforced 3 jaws will shrink inward to ensure that Zerk fittings can be connected together. Seal design locks securely onto fittings for heavy duty applications. Once the grease coupler is locked on Zerk fitting, you can free your hands to operate the grease gun. | WIDE APPLICATION】FIXSMITH grease gun coupler is suitable for auto vehicles, bridge maintenance, site heavy duty machinery, agricultural machinery including tractors, plows, pile pullers, disc harrows, seeders. Grease coupler locking plays an indispensable role in maintaining and lubricating machines, fits all 1/8" NPT standard grease guns including pneumatic manual electric. Grease gun tool is applicable to all Zerk fittings, SAE and metric, preventing leakage even under high pressure.