Perko Spring Clamps Pair Perko spring clamps are constructed of durable stainless steel. Sold as a pair. Specifications Screw size 6 Min I.D. 1 Max I.D. 1-34 Projection 2-14 Width Clamp 58 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Hardware Hardware Type Round Rail Product MPN 502DP2STS Product UPC 085226023101 Fast Ship In Stock Ships Today