Sheet Metal Folding & Hemming Tool (17.25 Inches). Sheet Metal Folding & Hemming Tool (17.25 Inches) This hemming tool has a 17.25-inch profile and is used on metal roofs to bend the ends at the top and bottom of panels. This metal roofing hemming tool is made of high quality steel construction and can make up to a 1-1/2 inch-deep bend.Made in the USA!Free Shipping to United States Addresses.Any Questions? Please Contact Us. This hemming tool has a 17.25-inch profile and is us¨¦d on metal roofs to bend the ends at the top and bottom of panels. This metal roofing hemming tool is made of high quality steel construction and can make up to a 1-1/2 inch-deep bend. Made in the USA! Free Shipping to United States Addresses. Any Questions? Please Contact Us. eBay integration by