SU-218 Stainless Steel U-Bracket for mounting the front wing spar to the 2X2 aluminum frame of the Affordaplane.
Made of .125 stainless steel.
Maxair# SU-218
A: 2-1/8
AN970-4 Flat Washers from Aircraft Spruce can be purchased to center the wing spar in the U-Bracket and take up the residual space.