FLEX HONE GBD41424 Cylinder Hone, 4-1/4 Inch Bore, 6 in Length, 240 Grit, Silicon Carbide
- The GBD41424 FLEX HONE delivers heavy duty plateau finishing and deburring for 4-1/4 in bores, perfect for engine cylinders, hydraulic components, and pneumatic systems.
- Features
- Silicon carbide abrasive globules on nylon filaments for consistent material removal
- Self-centering, self-aligning, self-compensating design maintains uniform surface finish despite wear
- Forgiving 6 inch abrasive length and 0.31″ stem fit common drill chucks for up to 600 RPM
- Heavy Duty GBD series with extra abrasive globules for improved longevity in high-use environments
- Manufactured in USA by Brush Research, originators of the FLEX HONE tool
- Description
- Flex-Hone Tool
- Type: Heavy Duty
- Capacity: 4-1/4 to 4 Inch (Bore)
- Size: 4-1/4 Inch Diameter x 13-1/2 Inch Length
- Applicable Standard: ISO 9001
- Abrasive Type: Silicon Carbide
- Grit Size: 240
- End Marking Color: Navy Blue
- Applications: Automotive, Military, Aerospace, Marine, General Industrial, Manufacturing, Oil and Gas, Firearm, Musical Instrument, Fluid Power, Hydraulic, Aluminum Extrusion, Earth Moving Equipment
- Specifications
- Order Part Number: BSGBD41424
- Item Description: FLEX HONE 4-1/4" Max Bore Diameter, 240 Grit
- Manufacturer: Brush Research Manufacturing Co., Inc.
- Manufacturer Part Number: GBD41424
- Country of Origin: US
- Harmonization Code: 82079000
- Default Selling Unit: EA
- The Cylinder Hone can also be referred to as 4-1/4 in flex hone, silicon carbide cylinder hone 240, heavy duty flex hone, cross-hatch plateau hone, and GBD41424 bore brush tool.
Brush Research Manufacturing, creator of the original FLEX HONE®, is a trusted U.S. manufacturer renowned for durable honing tools used across automotive, hydraulic, aerospace, and industrial sectors for precision surface finishing.
Q: What bore sizes does the GBD41424 cover?
A: It’s designed for nominal 4-1/4 in cylinders and works best in bores between 3.75 in and 4.25 in diameter.
Q: Can this hone be used in stainless steel cylinder walls?
A: Yes, 240 grit silicon carbide is ideal for finishing stainless steel, cast iron, and carbon steel surfaces at up to 600 RPM.
Q: What type of equipment is needed?
A: Any standard drill or drill press with a 3/8″ or 1/2″ chuck is suitable—use steady reciprocating strokes with hone oil for best results.
Q: How to maintain the hone after use?
A: Rinse it in solvent or water, let it dry fully, then store upright or hanging to protect the abrasive stones.
