Merit 08834154103 B-410 2-1/2x1-1/2in 180G AO Bore Polisher PK10

This is a new, factory-sealed box of 10 Merit B-410 Series BorePolishers, full part number 08834154103, assembled in Mexico and distributed by Saint-Gobain Abrasives under the Merit brand. Each unit consists of multiple layers of aluminum oxide coated cloth strips gathered and clamped around a threaded steel mandrel spindle, forming a fluted, flexible abrasive head that expands centrifugally during rotation to contact bore walls uniformly. The B-410 designation specifies a 2-1/2 in diameter by 1-1/2 in width working face at 180 grit — a fine-grit aluminum oxide (ARB suffix, resin-bond cloth) suited for final finishing, deburring, and polishing of bores, cylinders, and internal surfaces in ferrous and non-ferrous materials. These bore polishers mount via the integral threaded mandrel into compatible drill press, lathe, or hand-drill chucks and are used in automotive engine rebuilding, hydraulic cylinder finishing, and general machine shop bore conditioning where a controlled, conformable abrasive action is required.

Product Specifications