This set contains: G-Stranded Steel/Nickel, D-Stranded Steel/Nickel, A-Stranded Steel/Nickel, E-Stranded Steel/Nickel. 
Helicore strings are a multi-stranded steel core string, offering a warm tonal quality with excellent bow response. They are easy to play and are suitable for all double bassists. 

Features: 

• Multi-stranded steel core strings. 
• Moderately warm tonal quality in comparison to Helicore Orchestral. 
• Damping is optimised to create a good balance between pizzicato sustain and bow response, allowing for performances across many playing styles. 
• Easy playability and comfortable left hand feeling. 
• Packaged in uniquely-designed sealed pouches providing unparalleled protection from the elements that cause corrosion.