Ideal for homeowners, gardeners, and farmers seeking stable manual pumps maintenance parts to restores water extraction efficiency Each set includes 2 leather cups and 4 multi sized sealing rings, accuracy sized (53mm inner diameter, 82mm outer diameter) for smooth compatibility with most large pumps Crafted from premium leather, these pumps piston cups secure superior sealing, rapid water flows, and tear resistant durability for 75 type water pumps Pre soak for enhances elasticity during installation, ensuring tight performances and extended pumps life with minimal maintenance efforts Designed for backyard well, agricultural fields, orchards, and public parks requiring consistent water supply from 75 type manual pumps, Manufacturer: XINGBEI