Crafted from premium leather , these pumps piston cups secure superior sealing , rapid water flows , and tear resistant durability for 75 type water pumps 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 Ideal for homeowners , gardeners , and farmers seeking stable manual pumps maintenance parts to restores water extraction efficiency Designed for backyard well , agricultural fields , orchards , and public parks requiring consistent water supply from 75 type manual pumps Pre soak for enhances elasticity during installation , ensuring tight and extended pumps life with minimal maintenance efforts, Manufacturer: XAGMODSHN