The set includes two bolts and is engineered as a direct replacement for OEM parts, suitabel for select model equipment, and multiple lawns tractors models Manufactured with high grade stainless steel to resist rust and, this heavy duty spring maintains consistent tension through extreme vibrations and prolonged outdoor use Designed for equipment owners and technicians maintaining series mowers, lawns tractors, or commercial grade cutting decks Essential for restoring optimal deck belt during seasonal maintenance, replacements, or repairs on residential / commercial lawns equipment This stainless steel deck belt tension spring ( GX20377 / GX21582) ensures durability and precise tension control, Manufacturer: SHYYOULQE