Competitor Racing Lanes are proven superior in controlling water turbulence. Standard 4" discs model provide wave killing action. Easy lane to handle even without a storage lane reel. Lanes are shipped completely assembled and ready to install in the pool. A ratchet wrench is included with orders of 3 or more lanes. Standard (4") colours: Red, White, Blue, Green, Yellow, Orange, Purple, Maroon and Black, in any combination. F.O.B. FACTORY