The size and effect of the button size are in English and Chinese, and it is very practical. 1, the size of the button That is, we often say 14#, 16#, 18#, 20#, 60# and so on! Its changing formula is: diameter = model * 0.635 (millimeter). If we have a button in our hand, but we do not know its size, we can use a caliper to measure its diameter (mm) and divide it by 0.635. ... the measure of the longest scale, indicating the method unit: L, number (LIGNES), 1L = 0.625mm 1mm = 1/25 inch, (INCH) 12L = 7.5MM = 5/16", 13L = 8MM = 5/16 ", 14L=9MM=11/32", 15L=9.5MM=3/8", 16L=10MM=13/32", 17L=10.5MM=7/16", 18L=11.5MM=15/32", 20L=12.5MM=1/2†...... 2, the amount of units in Chinese and English PIECE PC.=1PC; DOZEN D.=12PCS; Luo GROSS G.=144PCS; LARGE GREAS GROSS GG.=1728PCS=12G 3, button surface effect in Chinese and English Button luminosity has light buckle, half light buckle, no light buckle. (a) SS, SPECIAL (TOP) SHINY FINISHE extremely bright; (b) S, STANDARD SHINY FINISHED normal general light; (c) SM, SEMI-MATTE FINISHED half-lit effect; (d) M, DULL (MATTE) FINISHED Dumb (fog) effect; (e) SD, SAND (DULL MATTE) FINISHED frosted effect. Want to learn more about buttons: accessible Custom Lingerie Women's,Custom Lingerie Womens,Women's Custom Lingerie,Custom Lingerie for Ladies FOSHANSHI NANHAI KAISIWA NEIYI CO.,LTD. , https://www.loveyousexy-products.com