This is a very beautiful 3.1 inches (80 mm) diameter tubular band.
The inner diameter of the band is about 3.1 inches (80 mm), and the inside of the band is lined with a thin urethane sponge to protect the cylinder.
The knob is large and very easy to tighten, and the washer is made of heavy nylon to prevent scratches when tightened.
3 1/4" camera screw holes (10mm spacing) on both top and bottom
The band comes with 2 bands as shown in the picture.
[Compatible Mirror Tubes] For outer diameter of 3.1 inches (80 mm) (FS-60C, FS-60CB, Vogue 77EDII, etc.)
Weight: Approx. 4.6 oz (131 g) (weight of 1 piece).