RAM Marine Electronic Ball Mount for Lowrance Elite-4 & Mark-4 Series Fishfinder (RAM-B-101-LO11) Type_RAM A Size RAM recommends this adapter base

RAM recommends this adapter base for "Light Use" mounting applications

Marine Grade Stainless Steel Components & High Strength Composite

RAM® security nuts/knobs are low profile and only add a small amount of additional bulk to your system when compared to the standard knob included

With the ball base in place

Ball Size: 1" Rubber "B" Ball Size

RAM Marine Electronic Ball Mount for Lowrance Elite-4 & Mark-4 Series Fishfinder (RAM-B-101-LO11) Type_RAM A Size RAM recommends this adapter baseThe RAM B 101 LO11 consists of a 2. 5" diameter round base with the universal AMPS hole pattern, double socket arm and adapter base that inserts directly to the back of Lowrance Elite 4, Mark 4 and Hook 4 Fishfinders. The adapter serves as a quick release mechanism, allowing you to remove or transfer your Fishfinder in seconds. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at both socket ends of