Stopper 2-Hole Rubber 53mm 4 mm 10.5 7lb ,Each

Details:

Stopper 2-hole rubber 53mm 4 mm 10.5 7Lb^ 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: 10.5, Top diameter: 53 mm, bottom diameter: 45 mm, 7lb