300ul PP micro vial from China Manufacturer, Manufactory. 150ul Insert with mandrel interior and polymer feet, 29*5mm; suits for ND8 Vials IP250 250ul Insert with mandrel interior and polymer feet, 29*5.7mm; suits for ND9 Vials I250 250ul Micro-Insert,31*5mm,clear glass,flat bottom; suits for ND8 Vials I300.