Brush Research GB45812 Flex-Hone 4-5/8" 120 Grit Silicon Carbide

The Brush Research GB45812 Flex-Hone is a 4-5/8" (118mm) diameter flexible cylinder honing tool designed for deglazing, surface finishing, and plateau honing applications. This professional-grade hone features 120 grit silicon carbide abrasive globules permanently mounted on flexible nylon filaments, providing consistent surface finish and crosshatch patterns essential for proper ring seating and oil retention.

Key Features:

• 4-5/8 inch (118mm) nominal diameter for precise bore sizing
• 120 grit silicon carbide abrasive for medium-fine surface finishing
• Self-centering, self-aligning flexible design prevents over-honing
• Creates optimal crosshatch pattern for piston ring break-in
• Low RPM operation (300-500 RPM recommended) with petroleum-based honing oil
• Durable construction for professional engine rebuilding applications

The Flex-Hone tool's unique self-adjusting design ensures uniform surface contact throughout the cylinder bore, removing glazing while preserving dimensional accuracy. Ideal for automotive, marine, motorcycle, and small engine cylinder reconditioning. The 120 grit specification provides an excellent balance between material removal and surface refinement for most gasoline engine applications.