Stopper 2-Hole Rubber 27 mm 23 mm 5 24lb , Each

Details:

Stopper 2-hole rubber 27 mm 23 mm 5 24lb^ rubber stopper, 2 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: 5, top diameter: 27 mm, bottom diameter: 23 mm, 24l