Solid brass body and stem. 20 teeth on the groove (top of the stem) for the handle, drilled with an M4 drill bit. Thread size G 1/2" BSP. Clockwise (blue) and counterclockwise (red) to open the tap. Rubber O-ring at the bottom, with threaded collar. Suitable for bathroom sink taps, kitchen taps, etc. Suitable for cold and hot water.Specifications: Material: Brass, Ceramic Elbow Diameter: 7.6mm Tooth on Elbow: 20 Teeth Thread Size: G1/2 (1/2'' 20.5mm) Thread Collar: With Thread Collar Dimensions: 51mm x 18mm (See the picture for detailed dimensions) Package Contents: 1 x Replacement Valve (Clockwise) 1 x Replacement Valve (Counterclockwise)