[Material] The ball buckle is made of cold-rolled steel and zinc alloy, which is . Item: Door stop retainer. [Easy to install] The double-drum lock is easy to install and use. [Overall size] In the natural state, the internal space size is 13mm/0.51 inch, and the internal diameter is 17.5mm/0.68. [Wide use] With double ball function, it can be installed in cabinets, cabinets, drawers, doors, etc. Material: zinc alloy Color: as shown Package Contents: 4 x Door Easy Lock(Mp-3) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.