HCA - Harris Clamp Adapter (No Clamp)Please NOTE this part will only work with older style RRS clamps that have a single hole in them as well as tongue and groove connection style on the bottom, it will NOT work with the newer rosette style connection, please make sure your clamp has both features before ordering this product, you are welcome to email or text us a picture of your clamp if you are unsure of this and we can tell you if this will work with your clamp. Product Overview The