This is an excellent assortment with 1,500 general-purpose pozi head screws in a range of useful sizes. The durable sorter case has removable inserts with a lid designed to prevent the contents from mixing when closed. The screws have countersunk heads and are self-countersinking so they will sit flush leaving a smooth surface finish. The deep cut threads offer quick insertion and have a higher pullout value. The zinc yellow passivation coating gives excellent resistance to corrosion. The screws are suitable for use with many materials including uPVC, timber, chipboard and MDF. This is an ideal selection to have in any workshop.