Polycarbonate (bulletproof vest material) casing, the pinnacle in durability and lightweight technology. The polycarbonate casing provides the rigidity necessary to house the vulcanized rubber road grip. Vulcanized rubber road grip is the rubber that meets the road. The Kahuna Creations' R&D team analyzed the entire stroke path to insure the ride is comfortable, powerful, and smooth. The undulated shape of the Kahuna Blade provides proper leverage at each contact point through the entire stroke path. Dampening holes are included to take out weight and deliver the sweetest-feeling stroke possible. The blade has two hooks on either side. This enables the freestyle rider to hook the board or rail creating countless new tricks. Removable. The Kahuna Blade is easily replaced. Simply remove two nuts and bolts, and pop on a new Kahuna Blade.