The RAM-B-149Z-LO11-NAV1 includes a B size 1" diameter rubber ball and adapter that inserts directly to the back of Lowrance Elite 4, Mark-4 and Hook-4 Fishfinders. The quick release mechanism in the Lowrance is fully functional, allowing you to remove or transfer your Fishfinder in seconds. Also included is a zinc coated metal u-bolt that accommodates rails from 0.5" to 1.25" in diameter. Included are black cover caps to be placed over the exposed ends of the u-bolt and a composite adapter that can narrow the rail to a minimum width of 0.5". 

Overall Height:
5" 

U-Bolt Dimensions:
Accommodates rails from 0.5" to 1.25" in diameter.

U-Bolt Dimensions:
0.50" to 1.25" 

Material: 
Powder Coated Marine Grade Aluminum 

Ball Size: 
1" Rubber Ball "B" Size 

Overall Height:
5"

Note: 
Part number reflects product packaged in clear clam shell for store shelf display.