Model 535 Threading Machine, NPT, 1 8 in to 2 in Pipe Capacity, 115 V AC, 15 A, 36 RPM' no checkout Power Blast Technology™ is a Power Blast Technology™ is a high speed blasting along the cutting edge that strengthens the blade to reduce breaks and increase durability Patented T2™ Technology reduces cutting forces on each tooth and optimizes chip removal to allow efficient cutting in the widest range of materials Patented metal cutting TPIs provide faster and more efficient cutting in the widest widest variety of materials PTFE paste with three replaceable rocker action jaws inserts grips work piece instantly Can be used with geared Models 141 and 161 threaders (sold separately)