Excel TWS-206A 6-Piece Adjustable Spoke Torque Wrench Set Excel's new lightweight aluminum bodied Spoke Torque Wrench takes the guessing and fatigue out of building wheels and maintaining the desired tension of your spokes Tightens all spokes identically to proper torque setting to maximize the highest strength capacity and reduce the likelihood of rim, hub and spoke breakage Unlike other spoke torque wrenches, Excel's torque wrench is easily adjustable with a range of 15-60 inch-pounds Excel's torque wrench kit comes with 5 heads in the most common sizes: 6.1mm, 6.3mm, 6.5mm, 6.7mm, including the spline drive head Additional and replacement heads are available in sizes ranging from 5.1mm to 6.9mm