Anschutz 2213-8300 Buttplate Carrier Quick re-adjustment of your settings due clear scales and nuts. In addition the nuts prevents slipping of the butt plate in position and fixing the length adjustment. Light weight, high strength aluminum construction. Length adjustment without thread. Two way height adjustment. Technical Data: Column diameter (mm):12 mm Range of adjustment (mm):50 mm Length (mm):70 mm Weight (g):75 g Item No.:001114