50µL Glass Conical Insert 4x25mm Mandrel Interior Bottom Spring

50µL Glass Conical Insert 6x25mm Mandrel Interior Bottom Spring

100µL Glass Conical Insert 5x30mm Mandrel Interior Bottom Spring

150µL Glass Conical Insert 5x29mm Mandrel Interior Bottom Spring

250µL Glass Conical Insert 6x29mm Mandrel Interior Bottom Spring

300µL Glass Conical Insert 6x38mm Mandrel Interior Bottom Spring