Plastic Micro Insert Suit for 10-425 Vial Germany Tisch 250µL Micro-Insert, 31x5mm for 8-425 Vials, Conical Tisch Scientific 250 µL Micro-Insert, 31 x 5 mm for 8-425 Vials, Flat Bottom, 100 Pack, CV2049. 250uL Micro-Insert, Flat Bottom, Clear, 31x5mm for 8-425 vials, 100/pk. Regular Price: $7.12.