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16" x 3" x 16" PITCH x 11'-9" LG. RH HELICOID SCREW
16" DIA. x 16" PITCH x 11'-9" LG. RIGHT HAND HELICOID SCREW MOUNTED ON 4" STD. PIPE BUSHED & DRILLED BOTH ENDS FOR 3" DIA. 2-BOLT SHAFTS