1. 12 color change
2. Various designs are available
3. Adjustable size will fit all.
4. Diameter : 16mm ; 17mm ; 18mm; 19mm available
5. We offer good price with reliable quality.
6. Customers' designs are welcome !
7. Nickel free plating for European standard if required
8. Customer packing: whatever customers require, but may have some surcharge for non- standard packing