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.SP2 It's design suggested by Peter Grant, the extra mass (for tone) and double cutaway (for control) make this a versatile bar for various styles of resophonic and lap steel guitar.