[Size] Length of rotary lock: 3 cm; Broken ring diameter: 2.4 cm. The size can easily meet your regular needs. [Quantity] The package contains 50 silver rotary locks and 50 silver key chains, a total of 100 pieces, which is a good choice for DIY key chain sewing project. [360 rotation] These rotary latches have the maximum flexibility of 360 , are easy to operate, and can rotate in any direction. The opening of the rotating metal clamp is convenient for the use of the clamp and is firmly fixed in the handle. [High quality zinc alloy] Our key chain link is professionally designed and made of high quality zinc alloy. Strong and stable, but light weight. [Key chain kit] The creative possibilities are endless. The lock chain with rotating key chain is very suitable for hanging photos, curtains and many other household items