The RIDGID 1224 electric threading machine handles NPT pipe from ¼″–4″ (6–100 mm), and up to 6″ with optional geared drive. It features an induction motor with two-speed gearbox (36/12 RPM), reversible operation, foot and hand controls, cam-action centering chuck, self-priming oil pump, through-head lubrication, built-in cutter and reamer—all in a durable cast-aluminium frame—ideal for industrial, shop, or field threading applications