Springfield KingPin 7" x 7" Seat Mount w/o Spring - E-Coat Finish [1615204-EC] Brand_Raymarine the threaded hook has 1-1/2"

the threaded hook has 1-1/2" of adjustment for ease of installation

Included Transducer: XPT-9-28-T

Just remove the selector switch and connect the existing wires to a 716 cluster

Cruiser Series Battery Selector Switch with AFD

Springfield KingPin 7" x 7" Seat Mount w/o Spring - E-Coat Finish [1615204-EC] Brand_Raymarine the threaded hook has 1-1/2"KingPin 7" x 7" Seat Mount without Spring E Coat Finish Features: Unintentional Detachment To Comply With ABYC 7 x 7 Swivel No Spring, Rotates 360 Use With Any Thread Lock Fixed Height Post For Fishing Use Only (sold separately) WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.