This item compatible with Nikon,Canon,Sony Lenses with 77mm lens thread size,such like Canon EF 17-40mm f/4L USM lens,Canon EF 100-400mm f/4.5-5.6L IS USM Lens,Canon EF 16-35mm f/4L IS USM Lens,Canon EF 70-200mm f/2.8L IS II USM Lens,Nikon AF-S NIKKOR 16-35mm f/4G ED VR Lens,Nikon AF-S NIKKOR 24-70mm f/2.8G ED Lens,Fujifilm XF 16-55mm f/2.8 R LM WR Lens,Sony FE 24-105mm f/4 G OSS Lens,Sony FE 70-200mm f/2.8 GM OSS Lens,etc. | This cap protects lens front from dust, moisture, direct sunlight and scratches.and also protects from scratches during storage and walking around. | Inlcudes 2 x High quality plastic center pinch front lens cap + 2 x Universal elastic lens cap keeper + 2 x Ordinary lens cap keeper. | Pinch the sides of the cap and snap it into place,center pinch design allows easy attachment and removal.The elastic loop goes around the barrell of your lens to protect lose a lens cap! | Replaces Canon E-77 II lens cap or 77mm lens cap from other brands.CHECK YOUR LENS DIAMETER BEFORE PURCHASE.Your camera's lens thread size will usually be marked on the lens barrel /UV lens filter barrel or printed underneath your lens cap. Ø77 = 77mm lens thread size.