glass tube with screw cap:12*75,12*100,16*100,16*150,18*150,20*150,with screw cap NO.NAMESpecifications Amount KH904Glass tube φ12*75 5000 KH904Glass tube φ12*100 4000 KH903 Glass tube φ13*100 3500 KH903Glass tube φ16*100 2500 KH902 Glass tube φ16*150 1700 KH902 Glass tube φ18*150 1000 KH901 Glass tube φ20*150 800 glass tube with screw cap