Oct 26, 2021 · Standard opening vials require 5mm inserts, Wide opening vials 6mm Inserts Shop Fisherbrand™ Micro-Insert, Clear Glass, for small opening vial at Fishersci.co.uk Fisherbrand™ Micro-Insert, Clear Glass, for small opening vial conical,0,1 mL ,<2 µL residual ,31 mm height Fisherbrand™ Micro-Insert, Clear Glass, for small opening vial | Fisher Scientific