High Quality Material: The screen drum tool is made of nylon material to avoid yarn breakage due to wear. With wheels on both sides, it is more convenient and economical to use. Double-sided roller tool: Manual spline roller tool has convex roller and concave roller, light weight, small and light, which can help you finish the work better and faster. Comfortable Grip: Hand Spline Roller Rolling Tool, Nylon Grip, Reasonable Design, Comfortable Hand, Make Your Work Easier and Save You a Lot of Work. Easy to use: When in use, the roller is slightly aligned with the strap, roll slowly, you can easily push the tape into the card slot. You can change the gauze in no time, very easy to use, simple and quick. This makes changing the gauze an instant pleasure. Necessary tool: This screen rolling tool is suitable for door and window tapes below 4mm. It is convenient for you to change the gauze. Smooth use, can greatly improve work efficiency, and will not damage the corrugated gauze.