Pyrex^® hollow stopper

Pyrex^® hollow stopper, stopper joint: 8

Pyrex^® hollow stopper, stopper joint: 9

Pyrex^® hollow stopper, stopper joint: 16

Pyrex^® hollow stopper, stopper joint: 22

Pyrex^® hollow stopper, stopper joint: 13

Pyrex^® hollow stopper, stopper joint: 19