Dollar tree Shoe Rack Bracket

My wife bought a shoe rack from dollar tree, could have been 99 cent store not sure, but the brackets were not up to snuff. The weight of the rack and any ecentricity in load would cause the rack to sag left and right to point of breaking some of the brackets that came with it. I designed these as extreme over kill but I just put two on the rack, one at oppositite corners of the bottom shelf level and it seems to be doing much better. Basically it could be used for anything that is 10mm pipes diameter as the holes are designed at 10.5 mm diameter. If your printer is really dialed in maybe you dont need the 0.5mm clearance but then use tinkercad or wrap some tape around the pipe. Anyway long story for a simple product but he since you're here, hi.