Focus Objective cover 2pcs 51mm

2 front caps to protect the front lenses of your binoculars. The front caps easily attaches to the binoculars with a rubber ring. Front caps are availible in the following sizes: 36mm - fits most 25mm binoculars 45mm - fits most 32mm binoculars 51mm - fits most 42mm binoculars 57mm - fits most 50mm binoculars 65mm - fits most 56mm binoculars When you measure your size, you must measure from outer edge to outer edge of your front lens.