Stopcock,straight Bore glassware Material:borosilicate 3.3 glass Stopcock,straight Bore glasswareWe specialize in laboratory glassware,main products:beaker,funnel,conical flask,boiling flask,burette,connection tube,test tube,gas washing bottle,separatory Funnel.etc. Bore mmPlug SizeStem O.D.mm 2 11/258415.2/3010