IKEA FIXA Features: - Screws are made of zinc-plated steel, which is resistant to rust. - Once the contents are used up, the case can be used as a storage box for small items. Contents: (Diameter x Length x Quantity) Total: 196 screws Round Head Screws 4mm x 45mm x 25, 4mm x 35mm x 24, 4mm x 26mm x 25, 4mm x 16mm x 25 Countersunk Head Screws 4mm x 45mm x 25, 4mm x 35mm x 25, 4mm x 25mm x 26, 4mm x 16mm x 21