1/8 in. to 2 in. NPT 12-R Exposed Ratchet Threader SetThe RIDGID 12 R Exposed Ratchet Threader Sets are designed to thread pipe. It was also designed as conduit using individual die heads for each size of pipe and a manually operated ratchet. The 12 R Exposed Ratchet Threader Set includes Ratchet Assembly and Ratchet Handle, alloy NPT model 12 R Die Heads for 1 8 in., 1 4 in., 3 8 in., 1 2 in., 3 4 in., 1 in., 1 1 4 in., 1 1 2 in. and 2 in. steel pipe and plastic carrying case. The set weighs 45 1 2 lbs.