I thought most of those Modolo sidepulls came with the hard sintered brake pads. More people hated them than liked them because many noticed they were harsher on their rim braking surfaces. I think the original pads were rounded on one end and square on the other, but it does look like the brakeset on the pic has the same shape and black color as those pads you are showing so it looks like they will work

Chombi