MODEL NUMBER: G53 Mechanism. This item is also suitable for salt water pool EASY TO INSTALL: It is made exactly fit for Polaris 180, 280, 380 Pool Cleaner Replacement G52 Backup Valve, Zodiac Polaris Pool Cleaner Models 480 Pro, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax. Please check the model number carefully before ordering to make sure it is the right part for your pool cleaner PREMIUM QUALITY: The replacement part is made from a sturdy & wear-resistant material, well-tested by the manufacturer - Meet standards - Ensure long lasting and effective operation. advantages of replacing: No more leaks | Improved water flow | Simple and inexpensive fix | Cleaner moves around as normal SAVE TIME SAVE MONEY: When the new gear is installed, the water outlet needs to be aligned with the water outlet of the shell. When the shell cover is returned, it needs to be tightly closed. If not, the gear may not operate well. If it is stuck due to sand, silt, etc., remove the gear, clean the sand and install it again Colour:white Material:plastic Size:About 12 x 2.5cm Package Contents: 1 x Mechanism Replacement for Polaris Only the above package content, other products are not included. Note: Light 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.