Extremely sturdy and rigid, ideal for studio and outdoors. Patented auto lock instantly clamps top of canvas to easel. Aluminum legs 3/4 in. and 3/8 in. diameter. Simple leg locking. Adjustable lower canvas holders. Leg spikes for outdoors. Supports standard 12 in. and 16 in. paint/sketch boxes. Holds a canvas up to 60 in. high, and can also be used as a table easel. Folds to 39 in., opens to 94 1/2 in. No. 300