The Monument 15PC is 
an automatic copper pipe cutter designed for cutting 15mm copper pipe in confined spaces. It features a durable ABS plastic casing that protects an internal steel cutting mechanism, and its design allows it to be placed directly onto the pipe and cut in either direction when the gate is closed over the pipe. Regular cleaning is recommended for longevity, but the tool is not suitable for stainless steel. 
Key features
Intended use: Cutting 15mm copper pipe, especially in tight or restricted areas.
Design: An automatic, "pipe slice" style cutter where the gate is closed over the pipe to initiate the cut.
Operation: Cuts by simply rotating the tool in either direction after closing the gate.
Durability: Constructed with a tough ABS plastic housing that protects the steel cutting mechanism.
Maintenance: For best performance, occasionally disassemble and clean to remove flux and dirt.
Not for: Stainless steel pipes.