Specification:Product Name : Reducing Pipe FittingType : Straight BSP Thread Brass FittingMaterial : Carbon steel ,Zinc Finish PlatingThread Size : 1/2 to 3/8 BSP Male PipeHex Width: 22mm/0.87-inchThread Length (approx) : 17mm / 0.67-inch /15mm / 0.59-inchColor : CopperTotal Size : 38mm x 22mm /1.50-inch x 0.87-inch (L x W)Pressure Resistance : 0-1.6 MpaOperating temperature range : -53 to 121 degrees C Package Content:4pcs x Reducing Pipe Fitting Description:1. Reducing hex nipple for connecting two threaded pipes with different diameters.2. The hex nipple fitting is a short length of pipe with threaded ends for connecting threaded pipes, and it has a hexagonal section in the middle for an increased bearing surface when adjusting the fitting with a wrench.3. It has male National Pipe (BSP) threads for connecting to female threaded pipes, creating a tighter seal than straight threads.4. This fitting is Zinc Finish Plating for corrosion resistance, ductility at high temperatures, and low magnetic permeability.