The original urban assault tire, designed to take the abuses of the most aggressive street style 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 also a great solution for cargo bikes, pedicabs, or any application where a tough tire is needed.Features Curved grooved slick design High rated pressure 65 PSI Urban assault durability Suitable for Groomed tracks, pavement/asphalt, skate parks Specification Brand: MAXXIS Model: Hookworm Material: Rubber Size: 27.5 Inch x 2.5 Colour: Black Bead: Wire Made in Taiwan Installation Guide & Notes: Professional mechanic installation is highly recommended for wirebread tyre.In general, the bead of a wired tire contains wire and cannot be folded or flexible like a folding tire, the bead is harder to mount and needs to be even or balanced when installation - Install one side of the tire. Then try pulling the bead up into the bead set on the rim. Install your tube with a tiny bit of air to make it easier to handle. Push the tube up into the tire and away from the open side of the tire. Work your way around the bead.