The TOTO Comfort Wave Shower, with a diameter of 90mm, achieves approximately 35% water savings. - Brand: TOTO - Model Name: Comfort Wave Shower 90φ THYC88 - Thread Standard: G1/2 - Water Saving Effect: Approximately 35% - Material: Plastic - Dimensions: Diameter 90mm This showerhead came with a replacement bathroom faucet. It has never been used, as I switched to my previous showerhead, so it has been stored in unused condition. I am not currently considering lowering the price. Please understand that this is a used item.