Stainless steel 1/8" NPT grease coupler — one-handed, leak-resistant connection for battery, pneumatic and manual grease guns Key benefits One-handed operation: Anti-slip grip and a smooth retraction mechanism let you install and remove the coupler with a single hand, speeding routine lubrication and reducing downtime. Reliable indoor/outdoor performance: All-stainless-steel construction resists corrosion and stays stable under continuous use in workshop, garage, or field environments. Universal compatibility: Fits all standard 1/8" NPT grease fittings and is compatible with battery, pneumatic, and manual grease guns — no adapters required. Leak-proof sealing: Reinforced sealing gasket delivers long-lasting, stable sealing to prevent grease leakage and waste during service. Features and performance Anti-slip design: Textured surface improves grip when working with oily or gloved hands. Smooth retraction mechanism: Ensures secure attachment and fast release without fumbling or extra tools. Durable materials: Stainless steel body for strength and corrosion resistance; reinforced sealing gasket for extended service life. Standard thread: 1/8" NPT connection for straightforward installation on industry-standard grease guns. Practical use scenarios Automotive maintenance: Quickly lubricate chassis points, ball joints, and U-joints during routine service with a one-handed coupler that prevents grease drips. Agricultural and construction equipment: Use outdoors on tractors, loaders, and excavators where a corrosion-resistant coupler and reliable seal are essential. Industrial machinery upkeep: Keep bearings, pivot points, and conveyor components properly greased during scheduled maintenance without frequent coupler replacement. What you get A heavy-duty, stainless steel coupler compatible with all 1/8" NPT grease guns (battery, pneumatic, manual), designed for easy one-hand use and long-term, leak-free performance.