The fwe 5nm torque wrench is a great tool to keep to hand modern carbon bike products are precision made and the bolts attached need to be tightened to a precise torque this torque wrench is set to tighten bolts to 5nm which most stem bar and seatpost bolts are limited too the fwe 5nm torque wrench comes with 4 5 and 6mm hex sockets and is perfect for use at home or to take on holiday when you have to rebuild your bike at the other end