Material:Metal Design;Color:May Vary to the Stock,Customer May not Choose Note:We post them Randomly,can't make sure which style you may get,we don't accept return/refund for the reason of few/same style,that is the reason why we sell them so cheap,pls note that before you buy,thanks! Ring Surface:22-34mm, Inner dia.17mm,it is adjustable, Box size:15x11x3cm