mrico beads , reflect beads .glass beads without hole beads,glass beads for road mark Size: 0.2-0.4mm ... colours lustered glass beadsCHEMICAL COMPOSITIONQuartz sand SURFACE TREATMENT & TECHNOLOGYopaque colours lusteredSHAPE DESCRIPTIONRound holeCOLORS & SIMILARITYTransprant,silver,rainbow,lustred,opaque,etc.SIZES 0 ... and also according to customers samples of mold production glass beads for road mark