Glass Specimen Jar with ground in glass stopper with knob

Material: Boro 3.3 glass and netural glass 

Specification: 
45x60, 45x90,45x120,45x150,45x180,45x210,45x240;
60x90,60x120,60x150,60x180,60x210,60x240,60x240,60x300;
75x90,75x120,75x150,75x180,75x210,75x240,75x300;
90x120,90x150,90x180,90x210,90x240,90x300,90x350,90x400,90x450;
105x125;
120c150,120x180,120x210,120x240,120x300,120x350,120x400,120x450;