Lumax Brand Grease Gun Super Luber Heavy-Duty Premium Cordless . The most advanced grease gun: fast, efficient, powerful and compact. Anti-fatigue carrying strap, soft, oil-resistant grip for comfort. Patented variable speed control trigger with computer chip for automatic shut off. Optimized air-flow maximizes motor cooling. High capacity 12-volt NiCd Battery (500 mAH) for extended operation. Rubber boot on battery pack helps prevent damage to battery. Built-in pressure relief valve prevents motor overload. Internal pressure release valve allows excess grease to flow back into barrel. 30" ultra-flex hose (7500 psi/518 bar WP) with adjustable hose holder. Non-drip seal helps avoid grease contamination and prevents leakage. Heavy-duty slim-line carrying case. 12V Single battery.