SIT Strings Fusion Wound Nickel Bass Guitar Strings (S.I.T.), 5-String Bass Light 45-125, NRB545125L

The SIT String Company FUSION WOUND nickel bass strings offer the ultimate in stability and tone. Using our exclusive “Fusion Winding” process, the under-wrap wire consisting of 92/8 phosphor bronze is fused to the high carbon steel core by using electricity and heat. Once cooled, the final winding is applied and the result is a bright, consistent, long lasting string with an amazing tone. These bass strings (formerly called RB/Rock Bright) are available in a variety of gauges and combinations.

• MODERN NICKEL TONE WITH ADDED CLARITY: Fusion Wound Nickel Bass Strings deliver a balanced, punchy tone with smooth highs and deep, controlled lows. The perfect choice for players who want the warmth of nickel with added clarity and focus across every register.
• FUSION WOUND: Our exclusive Fusion Wound Process uses electricity and heat to bond the wrap wire to the core under tension, creating a more uniform winding and eliminating dead spots. This results in better sustain, extended life, and improved tuning stability compared to traditional winding methods.
• RESPONSIVE PLAYABILITY & LONG-LASTING PERFORMANCE: Designed for versatility and comfort, these strings respond instantly to every playing style—fingerstyle, pick, or slap. Their durable construction and balanced flexibility keep your tone consistent from gig to gig
• MADE IN THE USA – CRAFTED FOR PROFESSIONALS: Proudly built in Akron, Ohio since 1980. Every Fusion Wound set is precision-wound, inspected, and sealed to preserve tone and performance. Trusted by working bassists who demand smooth feel, reliable tuning, and exceptional tone longevity.