Features Material : stainless steel Size: Total length is about 2.362''(60mm) Outside diameter: from 1.30''(33mm) to 1.57''(40mm) Inside diameter : from 1.10''(28mm) to 1.54''(39mm) Thickness : about 0.118''(3mm) There are 2diameters for the bracket of the PA lock: 0.118'' and 0.197''(3mm and 5mm). Discreet packing