"E-Force Oxygen is a String Set with maximum power, elasticity, resilience, enhanced soft feel, and minimal vibration. Length: 45 feet Size: 16 G Color: Amber E-Force Oxygen is a String Set with maximum power, elasticity, resilience, enhanced soft feel, and minimal vibration. Length: 45 feet Size: 16 G Color: Amber 00825 "

"E-Force Oxygen is a String Set with maximum power, elasticity, resilience, enhanced soft feel, and minimal vibration. Length: 45 feet Size: 17 G Color: Amber 00826 and Yellow 00816 "

"E-Force Oxygen is a String Set with maximum power, elasticity, resilience, enhanced soft feel, and minimal vibration. Length: 45 feet Size: 18 G Color: Amber 00835 and Yellow 00834 "

E-Force Platinum is a String Set with superior quality racquetball string, traditional feel, and response. Length: 45 feet Size: 16 G Color: White 00821 and Yellow 00811

E-Force Platinum is a String Set with superior quality racquetball string, traditional feel, and response. Length: 45 feet Size: 17 G Color: Amber 00828, White 00822 , and Yellow 00812

E-Force Platinum is a String Set with superior quality racquetball string, traditional feel, and response. Length: 45 feet Size: 18 G Color: Amber 00833 , White 00832 , and Yellow 00831