Trademark Tools 170-Piece Sheet Metal U-Clip and Screw Assortment with 5 Sizes: * Essential hardware set for use with sheet metal or other thin material * Screw threads through u-clip for strong holding power * Galvanized steel screws, black-oxide clips for rust and corrosion resistance * U-clips and matching screws in the 5 most commonly used sizes * Re-sealable, clear-view organizer case * Model# 75-1170