RIDGID 41600 Thread Cutting Oil, Chlorine-Free Thread Cutting Oil Designed to Prolong Equipment Life of the 418 Oiler Gun This threader is ideally suited to thread black steel, galvanized steel and softer material pipes with diameters between 4 inches to 6 inches (100 mm to 150 mm) The perfect tool for fast, precise pipe threading in straight or tapered applications using just 1 set of ultra-durable, stainless steel threader dies Versatile geared pipe threader can be powered by a variety of RIDGID power drives or be used as a hand-held pipe threader Receding gear feature on the 161 Geared Pipe Threader lets users right-hand thread either stationary or rotating pipes Cam-type work holder sets changes to thread size instantly while the machine's clutch helps to prevent jamming at the end of the thread