Brass Filing Block Great for Metalsmiths & Filing Work. This is a new brass filing block. This heavy brass tool can be used to hold items and materials of different thickness for filing work. It measures approximately 2 1/8" x 1/2" (54 x 19 mm) We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.