Screw Assortment Set -- 200 pieces assortment enables you can always have enough screws for your work on hand. This screw is a kind of self-tapping product, can drill the hole directly when use it. Includes Size: Total 200 pieces assortment, 8 size available. M2.9 X 9.5 / 25PCS; M2.9 X 13 / 25PCS; M3.5 X 13 / 25PCS; M3.5 X 19 / 25PCS; M3.5 X 25 / 25PCS; .0 X 13 / 25PCS; .0 X 19 / 25PCS; .8 X 13 / 25PCS. In a of lengths and widths, thus providing you with a handy assortment to choose from when drilling and screwing. Convenient to Storage -- Each wood screw set is neatly packaged in a plastic clear top hard shell tool box that features compartments which keep the hex head wood screws organized and ready to grab. Durable Material -- The black cover can help protect the screws from the harm of rust. The screws have been designed to produce a tight screw and well when unscrewed/screwed back again. Suggested Screw Uses -- Our wood screws can be used for indoor or outdoor woodworking! Use them as wood screws for fencing, as screws for wood desks or as heavy duty screws for building. specification: Colour:black Material:Carbon steel Package Contents: 200 * screw kit Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.