80-piece nitrile butadiene rubber (NBR) assortment for use in most applications. Includes 20 each of 3/16in., 5/32in. and 7/32in.; 10 each of 1/4in.; five each of 5/16in. and 3/8in. sizes. Includes convenient re-sealable plastic case. *Free Shipping to the contiguous United States consisting of the 48 adjoining U.S. states plus Washington, D.C., on the continent of North America. Free Shipping is not available to non-contiguous states of Alaska and Hawaii, US Protectorates, or APO, FPO or DPO locations. Photos are for reference only. Actual product may differ from the item shown in photograph.