This Micrometric Positioning Sliding Plate is Ideal for macro photography enabling you to make precise positioning movements for the perfect framed shot or for QTVR and other precise copy/ repro work, the new sliding plate has finger-tip control for hairsbreadth positioning but with a simple lock-release lever for fast set-up. Two plates can be interlocked at 90 degrees for full lateral/ forward/ /back movement (over 120mm). In extruded aluminum, the plate has 1/4-Inch and 3/8-Inch holes and screws for tripod and camera mounting. Attachment: 1/4-Inch and 3/8-Inch screws; attachment (bottom): 3/8-Inch female thread; color: black; depth: 2.26 in.; height: 0.59 in.; load capacity: 17.64 lbs.; material: aluminum; maximum length: 4.72 in.; weight: 0.99 lbs.