The 1.5" Ball Mount fish finder mount consists of a C size 3.7" length double socket arm, a 6.23" x 2" universal marine electronic devices mounting plate and a 2.4" diameter AMPS hole pattern round base. The AMPS hole pattern is designed to install directly in a boat, kayak or on any flat surface. 1.5" Ball Mount fish finder mount is designed for kayaks/SUP and small boat anglers needing install the fishfinder and radar. fish finder mount rectangle plate has a few options of screw hole patterns to fit various fish finders, Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more. Fish finder mount designed for high salt marine environment made of powder-coated marine-grade aluminum and high-performance composite for durability and and reliability in the most demanding marine environments. The weight capacity of the marine electronic mount can be up to 15.5 lbs at rest and 4.5 lbs at motion. Able to hold screens from 5" to 9" securely (available over 10", but fish finder is too heavy not recommended) Fish Finder Mount Compatible with Garmin: ECHOMAP CHIRP 72, 73, 74, 75, ECHOMAP CHIRP 92, 93, 94, 95, ECHOMAP Plus 7", ECHOMAP Plus 9", ECHOMAP UHD 6", ECHOMAP UHD 7", ECHOMAP UHD 9", ECHOMAP UHD2 5", ECHOMAP UHD2 7", ECHOMAP UHD2 9", GPSMAP 7" Series, GPSMAP 8" Series, GPSMAP 9" Series, Striker 5, Striker 7, Striker Plus 5cv, Striker Plus 7 Series, Striker Plus 9sv, Striker Vivid 5cv, Striker Vivid 7 Series, Striker Vivid 9sv, other Fishfinders and GPS Chartplotters. Fish Finder Mount Compatible with Lowrance: Eagle 7, Eagle9, ELITE FS 7, ELITE FS 9, Elite-7 Series, HDS Carbon 7, HDS LIVE 7, HDS LIVE 9, HDS PRO 9, HDS-5 Series, HDS-7 Series, Hook Reveal 7, Hook Reveal 9, HOOK-7, HOOK-9, HOOK2-7 Series, HOOK2-9, other Fishfinders and GPS Chartplotters. Backed by a lifetime warranty, If you have any questions about our universal fish finder mount, please contact us by email, we will help you solve it. Strg Fish Finder Mount Boat, Kayak Aluminum Marine Electronic Depth Finder Mount, 1.5" Ball Universal Fish Finder Mount Compatible with Garmin, Lowrance Fish Finder and More