The HA77TZA is the HA-77 bundled with the TZA-100. a 59mm Platform (with reversable ¼ 20 - 3/8 inch 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.
Sirui
Sirui Telescoping Horizontal Book Arm
MFR# HA77TZA
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