Primo The Wall tires are designed for Street, Ramps, Flatland and Dirt. Its a low profile tire with a knurled, bi-directional tread pattern for improved traction.
Tread pattern: Bi-directional / Knurled Tire pressure: 85 PSI Size: 20 x 1.85" or 20 x 2.10" Weight: 742.8 gram (20 x 1.85") and 850.5 gram (20 x 2.10")