Spoke Nipple Key for Bike Spokes

Spoke nipple key for tightening and keeping spokes straight and true, a must have tool for hardcore cyclists.  Suitable for spoke nipple sizes 10, 11, 12, 13, 14 and 15.  Tool diameter is 4 m with an inner diameter of 1.7 cm and a thickness of 0.5 cm.  Adjusting spokes is needed to prevent deformation and protect the bikes wheels.