The Screen Installer Clips will save you time and effort when installing patio, lanai, porch, window, door, and garage screens. Easy to use, even in odd shaped or tight areas. No more loose or rippled screens. Features: This tool allows you to get your screen tight while working by yourself. Our Screen Installer Clips now have rounded edges to make it easier to squeeze into groove. High Quality Materials: Our Screen Installer Clips are made of Carbon Steel with a White Zinc plated finish. This is a rust resistant material that will allow you to leave the clips in if it rains. The clips hold in place very well and are easy to squeeze with our rounded corners. They make this an easy 1 person job. **I recommend you use a Plastic Spline Roller when installing. The Wooden/Steel Rollers can easily rip the screen mesh** Different Applications: They can be used to help install and repair all Fiberglass screens, including: Heavy-Duty PVC, Polyester and Vinyl-Coated mesh screens (PetScreen, TuffScreen, Sun Trex, Ultrascreen, Super Solar screens, Window Screens, RV Screens, Sliding Door Screens, and Terrace Screens. This can be used with both Flat or Rounded Spline Screen Frames. Specifications: Color: as pictures shown Size: as pictures shown Quantity: 20 pieces Package includes: 20 x Screen installer clips