The SE 15" Oval Bracelet Mandrel has an extra fine smooth surface and is meant to be used for forming oval bracelets made of copper, gold, silver, or other metals. The small diameter is 1-1/2" round tapering to the large diameter end of 2-3/4". This mandrel has an oval shape with a hollow center. Warning: Keep away from children. This is not a toy. Warning: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles. SE is committed to providing the customer with the best source for value possible on the market. You will enjoy the quality, function and usefulness of our SE 15" Oval Bracelet Mandrel. IPR Rights Notice: Important: Avoid getting counterfeit items. Genuine SE products come with the SE logo on the packaging. SE is a registered trademark protected by US Trademark Law.