identify if your camera is set up level on a tripod. A must have product for macro .Compatible with most DSLR Cameras with a Standard Hot Shoe Mount.Note: Not for / Alpha cameras because of different hot shoe design.Made of plastic, being light, in a small size, high quality and novelty design.The spirit level mounts effortlessly right into camera's hot shoe, and it can be placed on a flat portion of the camera, which corresponds to the lens axis.Material:plasticcolour:As shownPackage Contents:2 * Triple 3 Axis Hot Shoe Bubble Spirit LevelOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.