Ensure you have everything you need with this Trade Pack that includes a variety of screw sizes, perfect for if you need more than one size. Tite-Fix Screw-Tite pozi screws are the fixing for you if you want a guaranteed, high-quality finish. These multipurpose, advanced screws have a unique Tri-Lock TS Threadform which joins together the benefits of a single thread and twin thread in one screw. You will get a balanced, immediate start with a fast insertion leaving you with a firm fix. The tri-lock shank ensures there is 25% less insertion torque, so your timber will not receive any damage. Screw-Tite screws can be driven into a large range of materials including hardwood, softwood, masonry, sheet steel, plastic and more without the need to drill pilot holes in most cases. The double-countersunk head means you will achieve a clean, flush finish every time. These screws have a PZ recess. Please note, a pilot hole is needed when using masonry. Pack contains: 100 - 3.5 x 20mm 100 - 4.0 x 25mm 100 - 4.0 x 30mm 100 - 4.0 x 40mm 100 - 4.0 x 50mm 50 - 5.0 x 60mm 50 - 5.0 x 70mm 50 - 5.0 x 80mm 50 - 5.0 x 90mm 50 - 5.0 x 100mm