1 style: Port number: about 18 (opening)/ring width: about 11 mm
2 style: Port number: about 16 (opening)/ring width: about 8mm
3 style: Port number: about 16 (opening)/ring width: about 13.4mm
4style: Ring slogan: 13 # (adjustable opening) Ring face width is about 9mm
5style: Port number: about 16 (opening)/ring width: about 8mm
6style: Port number: about 16 (opening)/ring width: about 15mm
7style: Port No. 13 ring face width is about 12mm
8style: Port No. 13 ring face width is about 15.7mm
9style: Port No. 15 ring face width is about 17.8mm
