Need to cut perfect circles with your plasma cutter? This roller guide attachment is what you need. It's designed to fit AG-60, SG-55, and WSD-60 model plasma torches (and might work on others with similar size). It's essentially a little wheel on an arm that acts as a compass. You set a pivot point, and as you move the torch, the wheel rolls along, keeping a consistent radius for a clean, smooth circle cut. The kit includes the parts you see: the main roller guide assembly. This is a must-have accessory for metal fabricators, welders, or hobbyists who need to cut round holes or discs out of sheet metal. It makes a tricky job simple and repeatable. Check your torch model to make sure it's compatible before ordering. Upgrade your plasma cutting game with this handy tool.