Stopper 2-Hole Rubber 32 mm 26 mm 6 18lb ,Each

Details:

Stopper 2-hole rubber 32 mm 26 mm 6 18lb^ 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: 6, top diameter: 32 mm, bottom diameter: 26 mm, 18lb