For those special applications that require tight mounting space, backup manual power or lower pressure & high flows, these special hand pumps are what you've been looking for. Ideal for fixed applications when pumps need to be bolted in place. The P-160 Series fits in an 8” x 8” space, yet still delivers 148 cu in. of oil. The P-1000 Series can be tapped into existing system reservoirs. All metal construction, plated pistons, light weight and high flow make these pumps the right choice for long life and trouble free duty. All pumps have 3/8" NPTF ports.