Build your own fingerboard obstacle course with the Tech Deck DIY Concrete Reuseable Modeling Skatepark. The kit includes everything you need to create your own ramps and railings, including a half liter of reusable concrete, ramp and railing molds, a molding tool and an exclusive Enjoi Fingerboard. DIY concrete is easy to use and reuse. Get it wet, mold it and race on it! Just add water, let it dry for 6-8 hours and your creation will harden like concrete. Use the molds to create perfect ramps or create your own fingerboard obstacles to raise your level. Just add water to create new challenges. You can challenge your friends, develop your skills and expand your Tech Deck collection. Tech Deck fingerboards are for skate fans aged 6 and up. Create your own obstacles with the Tech Deck DIY Reusable Concrete Playset. Ages 6 and up.