I received this item and have been very pleased with the results.  It is used and installed on the tub/shower water supply.  We live in an older house, and when someone uses the water while one is in the shower, it would drastically change the temperature.  This product ELIMINATES the possibility of getting burnt in the shower, if someone flushes the toilet.  Seemed very well made.  I hope it lasts a long time!  Great skin saver!