Vintage cylindrical brake-lathe-style boring or cutting bar approximately 5 inches long. One end carries a numbered micrometer-style adjustment collar and knurled knob; the opposite end has an articulated square cutter block retaining the small tool-bit piece shown. Pivot hardware, fasteners and adjustment graduations are photographed closely. Fit / compatibility: No specific AMMCO, FMC, Hunter, AccuTurn, Van Norman or other machine fit is claimed. No maker or catalog number is visible. Compare bar diameter and length, dial graduation, cutter-block size, pivot and tool-bit interface to the intended brake lathe. Only the exact pictured item is included.