... .customized sizeds and design double outer femail glass ground joints1. thicker wall, good quality,our glass joints won't shake or wobble ... ,green,blue, pink,purple,red4.regular size:14/20, 14/23,19/22,19/26,24/40, customized sizes and designs ... 4 cases is a big case, the volume of 1000pcs glass joints is 0.05CBM, and 20kgs. double outer femail ...