The SP501BP from Shindaiwa is a 5-gallon, professional-grade Backpack Sprayer. Designed for durability and efficiency, its internal piston pump creates consistent pressure for effective spraying. With a large tank, ergonomic design, and heavy-duty components, this SP501BP is ideal for commercial use when applying herbicides, pesticides, and fertilizers over large areas. The padded shoulder straps and user-friendly controls enhance comfort and ease of operation, even during extended or prolonged use.