ITEM: 0.315 Bore Diam, 180 Grit, Silicon Carbide Flexible Hone BRUSH RESEARCH MFG.. MANUFACTURER: BRUSH RESEARCH MFG.. BRAND: Brush Research Mfg.. MANUFACTURER PART: BC8M18. 0.315 Bore Diam, 180 Grit, Silicon Carbide Flexible Hone Extra Fine, 8 OAL (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Laps & Hones. Flexible Hones. N/A. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: Brush Research Mfg.Laps & HonesHonesFlexible HonesN/A.