Brush Research GB31212 FLEX-HONE®, 3-1/2" (89mm) Diameter, 120 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials

Description

🔧 Elevate your cylinder finish game—because flawless is the new standard.

The Brush Research GB31212 FLEX-HONE® is a 3.5" diameter, 120 grit silicon carbide honing tool designed for mild steel, stainless steel, cast iron, and softer ferrous materials. Its oversized, self-centering design ensures consistent pressure and a superior plateau finish with an oil-retentive crosshatch pattern. Ideal for rebuilding hydraulic, pneumatic, engine, and brake cylinders, it also deburrs crossholes in a single operation. Compatible with hand drills, drill presses, and CNC equipment, this USA-made tool streamlines finishing processes while extending seal life and improving performance.