The DMM Wallnut Set includes 11 sizes of wired stoppers that have been carefully designed and shaped to give you the best possible chance of getting a good, solid placement every time. *Features -The tried and tested Wallnut shape has been enhanced by adding a scoop to improve security in shallow placements -Anodized color coding makes it easy to find the nut you&';re looking for; colors are compatible with other nut brands so you can mix and match -Galvanized steel wire is stiff enough for overhead placements but flexible enough to minimize the chance of being lifted out -Hollow construction on the larger 7 - 11 sizes creates strong but light nuts