Constructed of 7/8" x .058" seamless chromoly tubing with laser cut backing plates TIG welded in place. Can be used to assemble Cub style landing gear legs or be fitted to strut type gear legs, such as those used on the Hummel Bird and the W.A.R. Replica Aircraft designs. Sized for use with our C-90 Hydraulic Disc Brakes but can also be used with the Azusa 4.5" and 5" drum brakes. These receivers are designed to accept our Cub Style heat treated chromoly insert axles, which are installed and bolted in place after you have completed your welding. Specs: • Designed to accept our 3/4" heat treated chromoly Cub Style axles. The bolt pattern for the backing plates is 4 equally spaced 1/4" holes on a 1.80" diameter bolt circle.