High-quality materials - solid wood handle + double carbon steel bearing metal wheel, heavy beech wood handle is hard and crack-free, thickened and enlarged metal convex and concave double wheels, each is finely crafted and durable, suitable for replacing aluminum alloy plastic steel doors and windows of any specification. Screen Tool Set - The screen scroll tool has two different wheels, a cam and a recessed scroll wheel to help you get your work done better and faster. The screen drum is compact, easy to carry and can solve your problems well. Each piece is carefully crafted and durable, making it a good helper for screen replacement at home. Easy to use - Mounting the screen with the screen scroll tool makes the job easier. This important tool feels comfortable in the hand and has smooth wheels that roll the screen and splines into the frame. It's very economical and adds huge value to screen repair jobs large and small. Ergonomic handle - The wooden handle is ergonomically designed and easy to hold. With wooden handles and steel convex and concave rollers, our net rolling tool has smooth steel wheels and sharp hooks that can hook out aged slats. Concave-Concave Combination screen scrolling tool with a 1-5/16" x 3/32" convex (rounded edge) steel roller on one end and a 1-5/16" x 3/32" concave (grooved edge) steel roller on the other end .