The design of the Hypro 4001N-E2H (4001N-AE2H) 12 Volt DC Roller Pump is perfect for bulk chemical, industrial, and agricultural transfer and spraying of a variety of fluids, such as aromatic solvents, liquid fertilizers, emulsives, herbicides, and insecticides. This cost-effective roller pump unit provides more lower starting torque and friction than other pumps with positive displacement characteristics for situations requiring higher pressure.