AlywinCycle - Maxxis Holy roller 20x2.20..Dirt to pavement .(Dirt/street/park) This tyre have inverted Knob design that for BMX.or Dirt Jump bike . | Facebook
Amazon.com: Mophorn SJ 300 Slip Roll Machine 12inch/300mm Forming Width, Sheet Metal Roller 20 Gauge Capacity Mild Steel,Manual Slip Roll with Crank Handle & 2 Thickness Adjustment Pins : Industrial & Scientific