【Fitment】Fit for the Paramount PCC2000 Rotating & Fixed Cleaning Heads. 【Function】Designed to provide a secure connection between the cleaning head and the floor fitting. 【Direct Replacement】Direct replacement for the original O-rings. Regularly check the condition of the O-ring and replace it if damaged to ensure proper operation of the nozzle. 【Package content】Comes with 4 black rubber nozzle gaskets. 【Satisfaction Guarantee】If you're not satisfied with the product, simply return it for a refund in 30 days. We support 30-day refund for return and 12-month warranty. 12345