Pentair R36017 Threaded Basket Shaft Replacement Vac-Mate 211100 211100 Pool and Spa Multifunction Vacuum Skimmer (Discontinued by Manufacturer) Threaded basket shaft replacement Fits Pentair Vac-Mate pool and spa multifunction vacuum skimmer model 211100 Measures 3/8-16-inch by 5-1/2-inch