Dual motor protection - circuit breaker and pressure relief valve. Ergonomically designed for balance and comfort. High-efficiency combination valve purges trapped air. High torque motor and high capacity NiCd battery combine for superior performance and run time. Patented stroke counter for measurable grease output. Versatile two-speed design, high volume and high pressure. 7500 psi. Includes: (2) batteries, carrying case and charger. 15.9 lbs