Size Name:M20 | Color:6 Pcs This item is manufactured with 304 stainless steel material for durable and long-lasting use. It's rustproof and corrosion-resistant with smooth sliding function. It equips with heavy duty capacity with very practical design and super solid structure. The precise design will ensure its practicability in the work of highly performance. Mainly applied in boat, seagoing vessel, driving fitness boat. Perfect for sportsman: hunting, boating, shop, and many more uses. Specification: Material: Stainless Steel 304 Stainless steel wheel Dia: 20mm/0.79" Stainless steel wheel Width: 8mm/0.31" Eye Dia: 13mm /0.51" Total Height: 73mm/2.9" Maximum loading capacity: 75kg Item Weight: 366g