RAM 75mm x 75mm VESA Mount with 1.5" Ball and Medium Arm double-ball-adapter providing a solid attachment point

providing a solid attachment point for compatible equipment and mounting surfaces

(2) 1/4"-20 Nylock Nuts

Clamps to square posts and rails up to 5" wide

Ball Size: C Size (1

GPSMAP 421s

RAM 75mm x 75mm VESA Mount with 1.5" Ball and Medium Arm double-ball-adapter providing a solid attachment pointFeatures: Square 3. 625" plate with a 75mm X 75mm VESA hole pattern 1. 5" rubber ball connected by an aluminum post ball is positioned 0. 88" from the center of one edge Two optional slotted holes for additional mounting options Standard double socket arm Overall length : 5. 625", socket to socket length 4. 5" Round 2. 5" diameter AMPS base with 1. 5" ball RAM ball and socket system with easy adjustment points for optimum viewing position Overall