The HA77TZA is the HA-77 bundled with the TZA-100. A 59mm Platform (with reversible 1/4 20 - 3/8" screw). In this configuration, it will support 2 devices by removing the foam handle and installing the provided platform.
A camera or tripod head can then be placed on both sides of the horizontal arm. A configuration of two parallel cameras or a single camera that is parallel to a different device can be configured.
WE SHIP IN 1 BUSINESS DAY and we package professionally. We are interested in BUYING your photographic equipment as well. We are Camera Exchange located in Waterford, Michigan.