The Crane AH-4 Accessory Holder installs permanently on the tripod. It will hold any accessory that comes with a common "belt clip", such as battery packs, pouches, radio slaves, etc. Each holder supports one unit, and does not interfere with the operation of the tripod.
Compatible with Bogen 3021N, 3021BN, 3228, 3011, 3001N and 3001BN tripods.
Made in the U.S.A. of light-weight aluminum.