Adjustable Two Sizes Adjustable Hair Circle Replacement With Two Sizes To Choose From, Small Size For 5.1 "- 6.3" Wrists; Large For 6.3 "~ 7.9" Wrists. Choose According To The Size Of Your Wrist. -Easy to Install：We provide free screws and srewdrivers to install it, very easy to install and remove -Perfect gift idea: the high-quality silicone strap with fashionable design is also the best choice for birthday gifts, anniversary gifts and any other holiday gifts. You can get: 1 x replacement band 1 x screwdrivers 4 x screws