O-Ring S/T Pump KitThis set of 2 "O" rings will fit both S and T pumps that have 8 screws connecting the top and bottom together. *Sold as a PairWARNING: This product can expose you to chemicals including ARSENIC which is known to the State of California to cause cancer or other reproductive harm. For more information go to P65Warnings.ca.gov.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Construction: Plastic Box Dimensions: 1"H x 1"W x 4"L WT: 0.1 lbs UPC: 087735104401