Stopper 2-Hole Rubber 15 mm 10 mm 0 90lb, Each

Details:

Stopper 2-hole rubber 15 mm 10 mm 0 90lb^ 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: 0, top diameter: 15 mm, bottom diameter: 10 mm, 90l