Top Post Mount Brackets For mounting folding and telescoping arm assemblies Accepts 1/2" O.D. pin Gray scratch resistant powder coat finish Fits Radius® style and most vertical posts Fits 2" diameter post Replaces 24V Volt/150 Watt bulbs in older 6300 lights A-dec® and Radius® are a registered trademark of A-dec, Inc. DCI has no affiliation with A-dec and A-dec has not authorized DCI replacement parts to be used on or in connection with A-dec® products.