RAM Round Post Clamp 1.5 Inch Ball Mount with Round AMPS Plate GPSMAP 742 B size ball works with

B size ball works with compatible RAM B size double socket arms

Suction Cup Base Diameter: 3

(1) RAM Pin-Lock™ security key

5" rubber ball for vibration damping and secure hold

nonporous surfaces

RAM Round Post Clamp 1.5 Inch Ball Mount with Round AMPS Plate GPSMAP 742 B size ball works withFeatures: Rail clamp base with 1. 5" rubber ball connected to marine grade aluminum casting Backing casting plate also of marine grade aluminum Includes 2 stainless steel bolts, nuts and cover caps Clamps to rails from 1. 25" 1875" in diameter works horizontally or vertically Standard size (medium) socket arm overall length of 5. 69": socket to socket length 4. 66" 2. 5" round base adapter with 1. 5" rubber ball and universal AMPs hole pattern