Neoprene stoppers can be used in areas where rubber would be attacked by reagents or solvents. Synthetic green neoprene stoppers have good resiliency and shelf-life. They withstand petroleum products and oils as well as most inorganic acids and bases. Sold as one-pound bags. Additional Info: Neoprene Stopper Assortment, One Pound Package Size(L x W x H): 4 X 6 X 6 (IN) Categories: Stoppers & Corks, Rubber HTS Code: 4016.93.5010 UNSPSC: 4.11225e+007 Country Of Origin: INDIA