Un-Powered Hinge System for PowerTowerA(R)The Hinge System is designed to safely pivot your satcom installation through 180Adeg significantly lowering the height of the installation.Designed to fit 30cm satcom antenna ONLY.Features:Unpowered System - Passive system requires no additional power. All movement will be done by hand No tools required - Fastened by hand, no tools required, using hand knob - can be used at any timeEasy height reduction - Designed to lower height of installation for passing under bridges, winter storage, trailing and boat stackingTidy installation - Low profile mounting which routes cables internally keeping the installation neat and tidy