... 18, 19, 21, and 25mm7). Square pearl cap size: 10 mm x 10 mm, 11.5mm x 11.5mm8). Hexagonal pearl cap size ... : 10.2mm, 12.5mm9). Octagonal pearl cap size" 10.2mm, 11 ... , 8.2, 9, 9.2, 9.5, 9.7, 10, 10.2, 10.5, 11, 11.5, 12, 13, 14, 14.5 ... 111.5#8 ~ 9mm8.5mm8.5mm/8.2mm/222#9 ~ 11.7mm9.5mm9.5mm/9mm/333#10~15mm11mm11mm10.5mm10mm10mm444#12~17mm13mm13mm/12mm/ ...