One (1) alloy color Pursuit T5304 or T6004 frame of your choice. Build your own roller skis! Works well if you want to build a racing rollerski as you can buy your racing wheels from another site and get the shafts from us. We have spare frames, axles, and spacers to get you started - check out our frame kit also!. Machined in MN. Choose 530 or 600 mm wheelbase, drilled for 6mm axles.