CableClam .63″Connector Opening (in): 0.63Features:Perfect for antenna installationWaterproof co-axial installation without removing connectorsSave the expense of removing and replacing connectorsAvoid poor connections from removing factory connectorsWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications:Type: Deck SealBox Dimensions: 1″H x 4″W x 8″L WT: 0.19 lbsUPC: 632085010010Owner’s Manual (pdf)