Each set is a kit consisting of 6 stainless steel tuning screws which can be used interchangeably as kingpins or axles. If an old axle falls out, replace it with a tuning screw rather than gluing the axle back in. Bent or broken TechDeck kingpin, just hammer it out and put a tuning screw! Saves your broken trucks! Keeps your trucks tighter longer than a stock kingpin with a nut. Also, great for smiths and feebles. You won't poke yourself on the kingpin if you miss a flip trick, and you'll never have to worry about tightening nuts anymore. . Warning, these screws do not work with bearing wheels, for wheels with bearings, use bearing tuning. FlatFace Truck tuning is used by some of the world's best known fingerboarders, to create the ultimate setups. For use on Techdeck Trucks.

How-To Video: http://youtube.com/watch?v=xtCXHN_O5ZA