Foto May 20, 8 28 08 AM Published 2012-05-20 at 8:47 am at 1280 × 956 in Foto May 20, 8 28 08 AM Its hard to see in there but the rear legs are threaded internal 3/4 x 16. The ID of the hole in the top tree 1″ and the risers sit on top of the tree not in it