Radio Flyer Wagon Swivel Handle

We've had a Radio Flyer Kid + Cargo EZ Fold wagon for several years and the handle was never comfortable to use. It doesn't put your wrist in an ergonomic position. I wanted to replace the handle with a swivel but its riveted on and didn't want to alter it. So I created this attachment that fits on the original handle. Hard to tell but I suspect it will fit many of their wagons as the handle shapes do look to be the same. If you have a different one and it works for you, add a comment!

It is 3 pieces to print. The top and bottom pieces should be printed flat so the recesses for the bolt head and nut are pointed up. The handle should be printed flat.  No supports are needed for the top and bottom clamping piece, but supports are needed for the handle due to the swivel portion. 

It clamps together with M5 x 30mm bolts and nuts. Both are recessed for a nice smooth finish. 

I've used this a few times and it is seemingly strong enough, at least I couldn't break it by hand, and toting around a 2 and 4 year old. I printed it with PLA, 5 perimeters and 20% gyroid infill. I'm only concerned about the strength at the swivel so if it proves inadequate I'll make an update and post it.

I've included the Fusion360 model if anyone is interested in tweaking the design.