This spare or replacement lens cap is designed to fit the Canon EF 400mm f/2.8L IS III USM super-telephoto lens, protecting its front element from dirt, finger prints and accidental damage. The lens cap fits securely to ensure it stays in place, but is also easy to remove quickly when youre working under pressure. Its made from tough, durable plastic.BenefitsProtects front element from dirt and accidental damageTough, lightweight designDesigned specifically to fit the EF 400mm f/2.8L IS III USMEasy to remove quickly when youre working under pressureThis spare or replacement lens cap is designed to fit the Canon EF 400mm f/2.8L IS III USM super-telephoto lens, protecting its front element from dirt, finger prints and accidental damage. The lens cap fits securely to ensure it stays in place, but is also easy to remove quickly when youre working under pressure. Its made from tough, durable plastic.BenefitsProtects front element from dirt and accidental damageTough, lightweight designDesig