100% Bronze Groover. A unique longest wearing one-piece casting won't wear out with extended use in concrete like steel edgers. Each blade is hand polished for a smooth professional finish every time. This 6in x 2-3/4in edger creates a 1/4in radius on the edge of concrete slabs with a 5/8in lip to prevents the edges from chipping with wear. The ends are turned up along the edges of the tool eliminating the possibility of gouging of the cement while forming the edge. The narrow 2-3/4in width lets the user get in tight spaces. The smooth wood handle is secured to the casting.