Adjustable buttplate system has an eccentric cam that lets you control the position of the buttpad to produce a precise, customized stock fit. Improves shooter comfort and control for more accurate shooting and higher scores. Components come as flat, uncut aluminum plates, so you can custom-cut for an exact fit to the stock. Accepts all popular aftermarket recoil pads. Thin model has a single hex head adjustment screw for setting buttpad vertical and horizontal position, plus rotation angle. Adds 1/4" to length of pull. Mfg: Stock Shop SPECS: 6061 aluminum, natural finish. 6" (15.2cm) long, 2" (5cm) wide. 3" (7.6cm) c-to-c hole spacing. Includes installation hardware and instructions. Thin Adjustment range: 2" vertical, 1/4" lateral, 360deg rotation.