The Trim Master carpet cutter makes cutting carpet & vinyl to room shape very easy and is one of the best tools for the novice to use. It works by following the walls of your room as you cut. It takes standard pattern hooked blades such as RWS101A and has a built in area for spare blades, working blade is fully retractable. Please note this is a plastic tool and needs to be used in that context. Take a look at UK Flooring TV review https://www.youtube.com/watch?v=x4Ql14u9424