Arkon Universal PDA Cup Mount Kit (CM923) Universal PDA Cup Holder Mount Features Arkon's "side-grip" universal PDA cradle Approximately 5 inches tall These are compatible with all SkyCaddies, iGolf and Golflogix units Cradle Dimensions: 3in x 4.5in x 1.75in Base: Expands from 2in diameter to 3in diameter