Rusticware cabinet knobs are all solid zinc die cast. All knobs are packed with standard 8/32" 1" long screw as well as a 1 1/2" scres to fit most applications. Standard drawer fronts are 3/4" thick. Often, fronts are applied to a 1/2" thick drawer box. These knobs will fit both applications. Choose from six different round cabinet knobs, each in three different finishes to compliment our other door hardware products.