The Axe Receiver
1" deep edge. Incuts are 60, 70, 80, 90 degrees. Measures 3 1/2" x 3 1/2". Sold as a set of 2.
Ka blam!
3/8-16 x 3-1/2" Allen head bolt
3/8-16 x 4" Allen head bolt
U.S. Patent No. 10,252,130