Adapter Lower Ground Mouth Size 24/40 Upper Ground Mouth Size 24/40 Overall Length 130 mm USP Specification Type I Product Type Adapter Type Adapter Material Borosilicate Glass Color Clear Autoclavable No Features Funnel and Pluro Stopper Sold Separately Top Designed for a Pluro Stopper Standards Not Applicable Upper Ground Stopper Size 5 or 6 ASTM Specification E438