ROUND CORNER DESIGN: We have improved the corners of the product into rounded corners and the design of the pressing place is more ergonomic and effortless. STURDY and DURABLE: This screen installer clips are made of premium quality 301 stainless steel for extra durability and long-lasting service life. Will never rust or stain your window. EASY TO INSTALL - This screen repait kit has excellent elasticity makes it suitable for any size of window groove,durable and easy to use and install,keep screen tight. FLEXIBLE SCREEN INSTALLER CLIPS - These door/windows clips clips will save you time and effort when installing patio, porch & garage screens.Made of stainless steel 301 materials, featuring amazing flexibility whichcan make the spline rolling tool easier to align and keep the screen tight. WIDE RANGE OF APPLICATION -Suitable for all kinds of decorative strips, aluminum alloy steel doors and window. Use them to install window screens, sliding screen doors, terrace screens, RV screens and even aquarium parachute stands, etc.