Lightweight, compact, and precision control make these speed controls the right choice for many heavy-duty applications. These speed controls are offered with in-line and elbow construction to give the widest choice to your unique application. Locking nuts are included as standard as well as simplified mounting. Thread sizes range from M3 to 2 and are available in both inch (NPT) and metric R/Rc(PT) Large flow in-line style Body sizes: 1/2, 3/4, 1, 1-1/4, 1-1/2 Port sizes: 1/4, 3/8, 1/2, 3/4, 1, 1-1/4, 1-1/2, 2