Compatible with Luxe Neo Bidets (Neo 110, Neo 120, Neo 180, Neo 250, Neo 320) and Vi-110.Shut-off Valve gives ability to turn off or reduce/adjust the water pressure coming into the bidet.Ideal for households with children (bidet can be "locked" so it cannot be turned on by accident).Easy installation - attaches to toilet tank and replaces cold water t-adapter that comes with Luxe Bidet. Size of 15/16" x 15/16" x 1/2"Strong metal and ceramic valve with beautiful chrome finish, for smooth and reliable operation.