- Size: 28 x 18 cm - Takes loads of up to 2 kg - Is mounted to the extension arm, tripod dolly and spreader - Practical tray for keeping items handy - Thread size 1/4" - In order to fix the tray on the centre column of the tripod you need the extension # 32050 or MonkeyGrip 2 # 320511 Material birch plywood, due to the nature of the material, color deviations may occur especially with color-stained plates.