4 hinge screw sizes to fit most frames Kit includes: 1 Optical Screwdriver, 1 Screw Starter, 1 Magnifier, 2 Metric Hinge Screws, 2 American Standard Hinge Screws, 1 Case Learn more about Walgreens brand products **Satisfaction Guarantee valid on Walgreens owned brand products only. Made in China Gently twist magnifier onto handle. Select the screw diameter that appears to be the correct size. Insert screwdriver tip into screw starter and hinge screw into other end as shown. Make sure leaves of the hinge are properly engaged as shown. Insert screw and tighten. DO NOT FORCE. If screw does not tighten easily, then try a different screw. ©2022 Walgreen Co.