Walimex Pro 19742 Aptaris Hight Adjustable Rod-Module for all Aptaris Cages (Black) The Aptaris Rod-Module Cage System for all Aptaris Cages from Walimex Pro (cages sold separately) Height adjustable Rod-Module offers more flexibility Features standard 15mm rods for mounting additional accessories such as a follow focus or a matte box The Rod-Module can be mounted on a Tripod or a quick-release plate via the thread at the bottom Quick-action lock release makes it a breeze to operate