The Tusk Billet Air Filter Bolt is made to replace the stock motorcycle air filter bolt. Tusk air filter bolts are constructed with a quality steel bolt and a CNC machined knob made of lightweight 6061-T6 aluminum. The bolt features an extended locating tip making it easy for the bolt to drop into the nut center. Knurling on the knob allows for superior grip making it easy to install and remove. Filter bolts are anodized for corrosion resistance and to give your bike that factory look.