A Must Have For Jewelry Wire Work. Harden And Flatten Your Wire Creations With Precision. Heavy, Solid Steel. You made some earring hooks out of wire, but they're a little, well, soft & bendy. You made some fancy wire spirals and loops that you want to incorporate into a project, but they aren't rigid. Never fear, here is a simple way to harden your flat designs. Place the wire on the bench block and give it a whack with a chasing hammer. Just a couple of hits and your wire is set in its shape! Easy to handle, simple to use. Heavy weight keeps block in place on your work table. Works with most wire gauges Will work with most types of wire, including Gold, Gold-filled, Sterling Silver, Copper. 4 Inch x 4 Inch, 3/4 Inch thick. Item weighs over TWO pounds, so please note shipping costs (below) before ordering.