LimoStudio (2 pcs) x Hot Shoe Protector Cover Cap and (2 pcs) x Hot Shoe Cover Cap Bubble Level for Canon Nikon Olympus Pentax DSLR SLR, AGG1820 [2 x] Hot Shoe Cover cap For Canon/Nikon/Panasonic /Olympus/Pentax [2 x] Hot Shoe Cover Cap Bubble Level for DSLR Cameras Material: Plastic, Rubber Protects camera's flash bracket when it is not in use Spirit level helps to measure the perfect level balance