This versatile dent roller gives instrument repair technicians access to hard-to-reach places, saving shop space and money by doing the job of many tools with just one. The MusicMedic Blue Handle Set is made from solid aerospace-grade anodized aluminum with user comfort and ergonomics in mind. The handles allow instrument repair technicians to use their body to put pressure on the workpiece. The Slide-Lock Roller Tool comes with three different roller attachments machined from 303-grade stainless steel that will not rust or need oiling between uses: the 1-inch Concave Roller, the 1-inch Truncated Concave Roller and the Multipurpose Conical Roller.