Available as a 3-pack, Fender UltraCore Bullets 4250 nickel-plated steel electric guitar strings are designed for players who demand refined feel, defined clarity and dependable tuning stability across multiple sets. At the core of each string is Fender’s reinforced UltraCore high-carbon steel core wire, engineered for enhanced strength and precise pitch control under demanding playing conditions. Wrapped in premium roundwound nickel-plated steel and paired with Fender’s patented Bullets design for Stratocaster guitars, these strings deliver focused articulation, balanced sustain and consistent performance while maintaining long-lasting durability.