These will fit just about every skateboard truck with a shorter profile- such as Independents- Krux- Thunders- Ventures- Grind King- etc.
The Aluminum Insert Bushing allows you to discard the top cup washer that your trucks came with- and crank that king pin nut down directly onto the top of the aluminum bushing with NO BLOW OUTS!!
These will fit most skateboard trucks- and will give you great turning capabilities along with a stable ride.
The aluminum insert allows you to do away with the top "cup" washer and gives you more Kingpin thread to use.