British Standard Pipe Thread (BSPT) Type. The long handle of threaded tools provides better grip and maximum torque, which can improve work efficiency and reduce hand fatigue. 1/4 "NPT, 3/8" NPT, 1/2 "NPT, 3/4" NPT, 1 "NPT, 1-1/4" NPT, handle and extension rod, wrench bracket, and suitcase.
eBay