RSD Fuel Technology OR3090 Marble Cutter  (1450 W)

It seems like you’re referring to a tool designed for stone and wood cutting, possibly with an open roller mechanism, and with adjustable angles ranging from 30 to 90 degrees. Based on this description, I believe you might be looking for a specific type of cutting tool or machine, such as a tile cutter, circular saw, or masonry cutter with a feature that allows adjustable angle cuts.