These guitar steels are designed by musicians with the special demands of today's playing styles in mind. They offer unique design features not found on any other bars, including cutaway ends for improved control and a semi-bullet tip, which facilitates movement across the strings. Shubb-Pearse steels are machined, not extruded, so the playing surface has a true radius. Made of brass for warm musical tone and heavily chrome-plated (not nickel) for abrasion resistance. SP3 Designed by Sally Van Meter for playing bluegrass, or any of today's demanding slide guitar styles. It's built for speed, precision, control and great tone.