... free and lead free 3.Oeko-Tex Standard 100 class GH----Professional high quality (prong,spring,sewing) snap buttons top manufacturer ... .5, 15, 16, 17, 18, 19,20, 21, 22, 23, 24, 25, 26.5, 29, and 30mm13). Logo for Socket can ... /23mm/999.5#25mm25.4mm25.4mm/25mm/30mm29~30mm30mm30mm/29mm/ GH Button --- Pearl Snap Button