This set of screw posts is easy to install, simply install the screw parts from the drilling hole sides, they can bind different items. Good supplies especially for handicrafts and wooden items. Standard slotted head, easy installation with screwdriver. Come with a box, it is convenient to carry. Features -Material: Stainless steel. -Note: Model includes 5mmx5mm/8mm/12mm/18mm/25mm/35mm/45mm - Perfectly round and smooth, hard and thick, can be used for a long term. - Easily applied with standard screwdriver. Threaded post lets you open and re-attach piece where needed. - Can be fixed in the belt ends, handbag, package, album, account book, scrapbook and other items. - Made of high-end and safe material, and practical for long time use. - This is for scrapbook binder screw, easy to install, not easy to break and deform. Package list: 2 of Post Binding Screws