Lens Cap Cover Keeper Protector for Canon EF 50mm f/1.8 II Lens Lens Cap Cover Keeper Protector for Canon EF 50mm f/1.8 II Digital Camera Lens Works with: Canon EF 50mm f/1.8 II Lens Works with: Canon EF 50mm f/1.8 STM Lens Works with: Canon EF 50mm f/1.4 USM Lens