Features: Adjustable printed circuit board holder frame. Solid metal base and ABS arm with sping-loaded clamp support 360 degree rotation easy to flip the motherboard. Adjustable width and 4 clamping thickness size to accommodate various board up to 300mm/400mm wide and up to 3mm thick Equipped with 4 rubber feet under the base ensures stability avoid sliding around on your workbenches The Circuit Board Holder Frame offer 360degree rotation, enabling you to view and work on your circuit board from any angles. Specifications: Material:ABS,Metal Size:Middle,Large Clamping ranges: 0-300mm (Middle) 0-400mm (Large) Package Includes: 1Piece PCB Holder note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.