Compatible Model Numbers: Fit for Coleman P6 series, Such as P6A1420 / D1420 / H1420 / D1420ASS16 and F4D019B-03B. Installation: First, attach the garden hose to the drain fitting and then attach it to the bottom of the Coleman pool. all above ground Coleman with a frame or Fast-Set pools. 2 PCS Pool drain fitting,The specification of the internal thread on the top of our product is 1.5in, and the size of the external thread connecting the garden pipe end is 1.0in. The external thread size for connecting the garden pipe end is 1.0in. If you do not have a suitable threaded joint to match our product, you can try fixing it directly with our product using a suitable garden pipe. Of course, using garden pipes directly will definitely have a slightly worse effect, with the possibility of unstable connections and water leakage.So it's best if you have an adapter that connects our product and garden pipes.