GLI 55-0000TD-BK Tidal Wave Above Ground Reel System Base Pool Cleaning Kit, 12 to 30-Feet Tidal wave above ground reel system base kit It is made of heavy duty resins and will fit pools from 12-feet to 30-feet in width Reel base assembly mounts to the pool's top rail Easy one person operation operates smoothly and the tube pivots out of the way when pool is in use Super-strong anodized aluminum tube kit sold separately with all required mounting hardware