Stopper 1-Hole Rubber 34mm 27mm 6.5 16lb , Each

Details:

Stopper 1-hole rubber 34mm 27mm 6.5 16Lb^ rubber stopper, 1 hole, color: black, contain a high percentage of pure rubber and weigh less than neoprene, resilient/pliable for a long time, low in free sulfur, can withstand adverse laboratory, size: 6.5, Top diameter: 34 mm, bottom diameter: 27 mm, 16l