1/2-3/4 (12mm-18mm) 2 Way Pipe Extractor / Drill Collar Bit Taper / Broken Pipe Extractor Plumber Tool / Pipe Extractor / Screw Extractor / Water Pipe Extractor - Size : 1/2" & 3/4" (12mm - 18mm) - For Broken Pipe : 1/2" & 3/4" - Application : Removes Broken Studs , Bolts , Socket Screws & Fittings Instructions: 1. Select the appropriate size of the extractor according to the inner diameter of the broken water pipe and insert it into the broken pipe. 2. Use a spanner wrench to clamp the extractor and turn it counter clockwise. 3. When the rotation is turned to 1/4 turn, the inside of the broken pipe is felt to be tight, indicating that the extractor has been activated. At this time, the extractor is rotated counter clockwise again, and the extractor rotates together with the broken pipe, and the more the rotation, the looser the wire is removed.