Omax Replacement Lens Cap for 49mm Front Threaded for Canon ef50mm f/1.8 STM Lens 49mm canon center pinch lens cap . it is used to protect lens brand new third party center-pinch front lens cap. specifications * perfect fitting replacement cap brought to you exclusively from digital camera shop * keeps your camera lens clean and protected * remarks: this lens cap is designed for canon 50mm f/1.8 stm lens and made by third party (not original lens cap)