- 250ul glass inserts, deactivated 100/PK. Be the first to review this product. $145.00. SKU: . Overview. Specifications. Vial insert, 250 µL, deactivated glass with polymer feet, 100/pk Insert size: 5.6 x 30 mm. Vial insert, 250 µL, deactivated glass with polymer feet, 100/pk Insert size: 5.6 x 30 mm.