Feature:1. SHOCK ABSORPTION: The comfortable material cushioned the camera eyepiece to reduce fatigue from long shots, and the eyepiece cover is designed to reduce impact and better protect your eyes2. EASY TO INSTALL: The interface size of eyepiece eye cup is 19mm and fits easily and securely into the camera viewfinder, provide great convenience for your life3. APPLICABLE MODEL: Replace the original eyepiece patch, and compatible with for FM3A, FM3, FM2, FM, Fa, FE2, F3, F3AF mirrorless camera, universal and versatile4. INTERFERENCE RESISTANT: Silicone eyepiece eye guard cup has no external light source interference, and the observation effect is better, you can use with confidence5. LONG LASTING SILICONE: Eye cup viewfinder is made of excellent silicone material, easy to use, long lasting and practical, has good elasticity and softness, high temperature resistantSpecification:Item Type: Eyepiece Eye CupMaterial: SiliconeInterface Size: Approx. 19mm / 0.75inApplication: For FM3A, FM3, FM2, FM, Fa, FE2, F3, F3AF.Package List:1 x Eyepiece Eye Cup