Rear Lens Cap fits Sony Mirrorless E-mount lenses such as Sony E PZ 16-50mm f/3.5-5.6 OSS Lens / Sony E 18-55mm f/3.5-5.6 OSS Lens / Sony E 35mm f/1.8 OSS Lens / Sony E 50mm f/1.8 OSS Lens / Sony E 55-210mm f/4.5-6.3 OSS Lens / Sony E 10-18mm f/4 OSS Lens