Stainless (Outdoor Usage) Silver Finish Upholstery Nails/tacks 7/16" - 100 Pcs [Nickel/Silver Finish] DX0511ENI 100 Pcs/Pack, Head Diameter [7/16 in] *** Full Length top the bottom [5/8 in] *** Shank Length under the cap to bottom [1/2 in] Made By Brass Head with double layer Nickel Surface Finish, They won't get rusty! Suitable for outdoor projects like garden furniture... But please read exceptions below item description section to use them outside Strong and heavy weight items for upholstery industry, with proper tools you will not need any prefix hole. Please don't compare this items with filmsy cheap DIY nailheads. Requires proper tools like Needle nose pliers and light weight tack hammers to install them. Not using pliers will cause bending. So please don't use your fingers to hold them while hammering.