1/2 inch male NPT industrial interchange plug. Connects threaded tool inlets and pipe to matching Air Chief industrial couplers for compressed air service.
1/4 inch female NPT industrial interchange plug. Standard pneumatic plug for compressed air tools and lines in fabrication shops and industrial maintenance work.
3/8 inch male NPT industrial interchange plug. Threads onto pipe and pneumatic tools for connection to Air Chief industrial couplers in shop and field work.