they were fitted on Scapin prorace zr's. Very popular in Italy, they were made in Dedacciai Zero steel; they had snake stays. Probably the best steel MTB ever made in Italy in the 90's.
I have an earlier version, which came with a rigid fork, straight stays, and made of Columbus Genius tubing instead. The Prorace with the pace fork came in team white-red bue, and it was a beauty
Here's mine, with crappy parts because my dad uses it as a commuter.