450-10 injection molded plastic receptacle allows full batten adjustment with the turn of an allen head fastener on the front end. Accepts 10mm studs from Schaefer slides and competitors systems. Fits flat battens up to 1.6" (40mm) x 0.20" (5mm) and round battens up to .5" (12.5mm) in diameter. Adjustment rance .625" (15.5mm), Length 4-7/16" (110mm), Width 2-5/8" (65mm).