Good quality iron, and the surface is coated with antique brass. Total size: 33 x 23 x 8mm / 1.3" x 0.91" x 0.31" (L*W*H); diameter mounting hole diameter: 2.2mm / 0.09" Screws for mounting holes: A complete lock set includes 5 mounting holes, the hole diameter is 2mm. Wide use: these antique clinker clips are great for small projects, homemade jewelry boxes, trinket boxes, gift boxes, building birdhouses, etc. Contents of packing: 2 pcs x antique fort Description: made of good quality iron, and the surface is covered with antique brass Can be used on jewelry boxes, small boxes, chests, etc. an ideal material for home, office, store, and so on.