Includes an antilost rope to prevent the lens cap from being misplaced while shooting. Compatible with a wide range of DSLR lenses with front filter thread sizes: 37mm, 40.5mm, 43mm, 46mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm and 82mm. Suitable for most DSLR cameras. Protects the front and rear of the lens from smudges and scratches, helping to maintain image quality and lens longevity. Easy to install: pinch the center and quickly attach to the front of the camera lens for a secure fit. Clear, practical design focused on protection and convenience without adding bulk or extra steps to your workflow. Use scenarios Outdoor and travel photography: keep lens caps secure with the antilost rope while moving through crowded areas or rugged terrain, reducing the risk of cap loss. Field shoots or windy environments: the attached rope ensures the cap stays connected when you switch lenses or adjust gear, saving time and avoiding cap misplacement. Studio or urban shoots with frequent lens changes: quick, tool installation lets you protect lenses between shots without slowing down the workflow.