Stopper 2-Hole Rubber 90 mm 75 mm 14 1lb, Each

Details:

Stopper 2-hole rubber 90 mm 75 mm 14 1lb^ 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: 14, top diameter: 90 mm, bottom diameter: 75 mm, 1l