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12" x 2" x 12" PITCH x 11'-10" LG. RH HELICOID SCREW
12" DIA. x 12" PITCH x 11'-10" LG. RIGHT HAND HELICOID SCREW MOUNTED ON 2 1/2" STD. PIPE BUSHED & DRILLED BOTH ENDS FOR 2" DIA. 2-BOLT SHAFTS