Item Type: Rear Lens Cap Material: ABS Interface Specification: M42x0.75 Applicable Product: T mouth telescope, M42x0.75 camera lens Package List 3 x Rear Lens Cap 1Toughness: This rear lens cover is made from an integrated process for a fine, glossy appearance and greater toughness. 2Excellent Protection: This rear lens cap will protect your valuable lenses well when storing them or after removing them from the camera body. 3Simple Appearance: This lens rear cover has a simple appearance to match your device, and in addition to giving the lens protection from dust, fingerprints and dirt, which also makes your device reflect a higher value. 4Wide Applicability: This lens back cap has a female M42x0.75 thread with a 2inch outer diameter and can be used on all telescopes, cameras, etc. with a M42x0.75 female thread interface size. 5Set of 3 Caps: This lens has 3 caps in a set, so you can change the caps at any time and have multiple caps on standby in case you need them.