For bending and forming metal items without marring textures and details, this 9" x 3" hardwood block is ideal. With 8 grooves ranging in size from 5 mm to 32 mm wide, you can use it with ring, forming, and bezel mandrels. Simply place your stock across one of the grooves, position your mandrel over it and hammer, moving your material around the mandrel as you work it. Hardwood construction allows you to work heavy gauge stock.