Spare solid glass stopcock key, NS 14,5, 2pc/pk Back Catalog number: OST-227-3141 Availability: In the manufacturer's stock Price on request - + Recommended U-T3ATX-2S Air Toxics, C2 - C14 (TO-14), cold trap Price on request M-MCTOP250I Removable lids for M-CTE250I, inert,pk 4 Price on request M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request