Why it? The maker has an issue (on some units) where the rubber rollers on the paper hold down bar may shift from the edge of the cutting mat, causing cuts to fail. What to do if the maker's rubber roller moves off track? You do not need to replace the rubber rollers. These C-clamps can help secure the rubber in place. Reposition the rubber and apply pressure, then snap each clamp onto the roller bar on the moving side of the rubber. Additionally, this solution is easy to operate without disassembling the machine. Use pliers to assist in snapping the ring onto the rod if necessary during installation. Replacing the rubber roller typically requires disassembling the machine, which can risk damage. Rubber roller retention fix Retaining Rings Compatible with Maker/Maker 3 10 pcs per pack How to install? Reposition the rubber roller and snap the ring onto the metal rod on the moving side of the rubber. Use pliers if needed; the size is intentional to prevent rubber deflection. Color: Black Material: Rubber Package Contents: 1 set x Rubber roller retaining rings Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.