Torque specs are there for a reason, especially when you're wrenching on a 12,000 carbon fiber masterpiece. Get the build right, and the bike will ride perfectly. Get it wrong and components will break in the shop or fall off on the road. The Effetto Mariposa Giustaforza II 2 16 Pro Torque Wrench is the best tool for getting your build just right. When you're done with the build, you can place it on the mantelpiece with your other works of fine art. The Effetto Mariposa Giustaforza II 2 16 Pro Torque Wrench is easier to use than it is to say. You just insert the appropriate bit and set the torque with the dial on the handle. When the correct torques has been reached, the wrench produces a loud click and allows three degrees of free movement.