Plastic
Black
Dimensions - w = 18 mm, h = 17 mm, d = 15 mm
Ring size - 15,3 = 4"
Dimensions - w = 22 mm, h = 28 mm, d = 18 mm
Ring size - 17,8 = 7"
Dimensions - w = 26 mm, h = 29 mm, d = 20 mm
Ring size - 18,8 = 8"
Dimensions - w = 24 mm, h = 30 mm, d = 20 mm
Ring size - 19,4 = 9"