As the original urban assault tire, Maxxis designed the Hookworm to take the abuses of the most aggressive street riders. Bead-to-bead tread provides durability and traction whether you're dropping staircases, grinding rails or riding in your local skate park. The Hookworm is available in an array of sizes for a variety of applications. The most important part of a tire is arguably the rubber compound used within the tread and with Maxxis's Single Compound you get one compound throughout the tread for longevity and performance. Features: Extreme durability for urban assault, park riding, commuting, etc. Grooved slick tread design Wrap around tread pattern for great cornering grip on pavement Specifications: Tire Type: Clincher Bead: Wire Compound | Casing: Single | - TPI (Threads Per Inch): 60 TPI Puncture Protection: - Inflation: 65 PSI (Except 20" - 110 PSI) Color: Black Weight: 1239g (29" | 2.5"), 1020g (24" | 2.5"), 655g (20" | 1.95")