250ul Insert with mandrel interior and polymer feet, suits for ND8 Vials: IA250: 250ul Micro-Insert, clear glass, flat bottom, suits for ND8 Vials: IB300: 300ul Micro-Insert, clear glass, flat bottom, suits for ND8 Vials: V18A: 1ml shell vials, 1st hydrol glass, clear, 8mm PE-Plug, soft, without insertion: