Easily Winterization: The skimmer winterization plug acts as an ice compensator inside your skimmer housing that absorbs the expansion of winter freeze up in skimmers, preventing it from cracking the skimmer housing. Universal Fit: 16.5Inch in length, this pool skimmer plug accommodates most above ground skimmers, works with 1 1/2inch and 2inch tapered pipe thread, and fits for big, deep skimmers. Quality Material: Made of quality ABS plastic, the skimmer winterization plug withstands harsh winter conditions. Saves you Time: With skimmer winter tube, it does not require you to leave your pool drained below the skimmer for the winter and refill your pool every year. Easy to Use: Easy to screw in place; Before fitting, verify that the plumbing has been thoroughly emptied and no water is left in the system. Quantity:2 Pack Colour:Blue Material:Plastic Package Contents: 2 * Pool Skimmer Plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.