Stopper 1-Hole Rubber 24mm 18mm 3 33lb , Each

Details:

Stopper 1-hole rubber 24mm 18mm 3 33lb^ 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: 3, top diameter: 24 mm, bottom diameter: 18 mm, 33l