Construction: Crafted from premium rubber and copper, these rollers boast high durability and performance. Their robust build guarantees a long service life and resistance to wear, providing reliable and consistent results over extensive usage. Maintenance Tips: Regular cleaning is crucial for maintaining the efficiency of these rollers. They tend to accumulate adhesive from cutting materials, which can affect performance. Cleaning them frequently ensures they continue to provide precise and clean cuts. Optimal Replacement Recommendation: For the best results and to maintain even pressure across your device, it is recommended to replace pinch rollers in pairs. This ensures balanced operation and sustained quality in your projects, enhancing the of your plotter. When the paper deviation becomes more and more serious and the pressure wheel cleaning cannot be solved, it is time to consider replacing the pressure wheel. When replacing the pressure rollers, you must replace several of them because the friction coefficients of the old and new pressure rollers are different. If they are mixed, the paper will deviate. Do not adjust the pressure of the pressure wheel at will. Without a pressure gauge, it is easy to cause uneven pressure, which may cause the machine to deviate. Colour:As Shown Material:Rubber+Metal Size:A:4x11x16mm Package Contents: 6 * Engraving machine pressure wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.