Description The Kupo Hex Stud with 3/8"-16 Female and 1/4"-20 Female Thread is a solid brass short hex stud designed for the Convi Clamp System. One side is tapped with a 3/8"-16 female thread and the other with a 1/4"-20 female thread.FeaturesBrass ConstructionHex Resists TwistingContentsLimited 5-Year Warranty