IMPORTANT!!! Base Size - 1.69 inches 43 x 43mm drop-in bottom fitting. Allows quickly attach and detach your camera from the tripod. Fits any tripods as long as they are 43mm, 1-11/16” square opening UNC 1/4-20 interface, made of ABS Resin, Lightweight and durable Matte surface of non-slip design, with cameras on will not twist, 6.6lb load capacity Little black spring loaded pin double prevents cameras on from twist Compatible with Mactrem PT55, for KINGJUE 60” or 72" Tripod, Model VT-860 / VT-890, for Andoer 80" 2-in-1 Tripod Monopod, Models TTT-002 / TTT-003, for Neewer 70" Tripods, Models SAB234, SAB264, for Targus TGT-58TR, for Sunpak 5858D tripod (more models please refer to the Compatibility Chart)