Here For sale on this buy it now auction the hard to find odd size ubolts that fits the rotors this is one set of Rotor ubolts These ubolts fit  the CDE Hygain Antenna rotators models, AR 22 AR 33/40 BT one The ham M,2.3.and 4 The U-boats are zinc steel grade 5 . 1/4×20 threaded 3 1/4 inches long. These are new U-bolts  comes as shown in photos with locking washers and nuts. Thanks, Ken KT4KI IN THE HEART OF DIXIE BIRMINGHAM, ALABAMA 73!