The A035TM Tripod Mount for from Tamron is an optional tripod mount made specifically for the 100-400mm f/4.5-6.3 Di VC USD lens. The mount is also compatible with the Tamron 50-400mm f/4.5-6.3 Di III VC VXD Lens. The dovetail design is compatible with most Arca-type heads and clamps.