Cheap And Discounts 1/2" 3/4" 1'' 1-1/4'' 1-1/2'' 2 Inch Stainless Steel Hall Flow Sensor Water Flow Sensor Flowmeter Control Liquid Sensor Switch Wholesale. Buy Directly From Merchant Best Seller 2024 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.