Wehrs Machine offers these lightweight 1/2" -20 fine thread hood pins with the flange machined on them for the hood to sit on so you dont have to put a rubber hose on the pin. These hood pins with shoulder are constructed out of high quality aluminum and feature an anodized finish. Threads are RH Female and the thread pitch is 1/2"-20. Aluminum construction. Anodized finish. RH Female threads. 1/2"-20 thread pitch. Choose your length: 2" or 5"