Specially designed for cranks and pedals, the new HT-8 hex tool is designed and built for speed, leverage and comfort. Perfect for changing rear sprockets or splitting cases. HT tools feature an ergonomically designed screwdriver grip, with an extra long, super strong 8mm hex on one end and a ball driver hex on the other.Park Tool Hex Tool 8mm Features: Built for speed, leverage and comfortDual density, ergonomically designed screwdriver handle molded over an extra long, super strong hex