Yes, roundball. I was shocked when i saw those tiny teeth on those mini hacksaw blades.
They work great.
For what it's worth, a few years ago, I bought a table mounted two wheel band saw from Sears that was all steel construction. (Transelate stiff frame) I used a 3 speed gear box off an old self propelled lawn mower and geared it down to the proper speed for cutting steel, brass, etc. It works great!
Oh, the saw was on sale for $100 bucks.