I picked up a 36" brake with stand from Princess Auto that is identical to the HF unit. Tried to buy a decent finger brake locally here second hand but they are like hen's teeth.

After lots of fiddling and adjusting - meh. Works ok on 22 but struggles with 12" wide 20. Bends are not well defined. Can't image it on any metal under 20 except for very narrow pieces.

I will probably take it back.