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Pro-Graad TwistFlex Cylinder Hone | 3/4' 320SC Flexible Cylinder Honing & Deburring Tool | 0.75' Bore Brush for Hole Diameters 0.65'- 0.77' | Silicon Carbide 320 Grit | 1/4' Shank | 8' Overall Length

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$16.44

$ 7 .99 $7.99

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About this item

  • What's Included: 1 each Pro-Graad TwistFlex Size: 3/4" 0.75" (19mm) Bore Diameter, Working Length of Brush 2 3/4" (70mm), Shank Diameter 1/4" (6.35mm), Overall Length 8" (203mm), Grade: Silicon Carbide 320 Grit. FOR USE ON BORE DIAMETERS 0.65" - 0.77".
  • The Pro-Graad TwistFlex 3/4" Cylinder Honing & Deburring Tool is manufactured oversized - ORDER BY THE BORE SIZE. Brush will be approximately ten percent oversized, but will easily conform and fit into the bore size diameter due to the flexibility of the honing tool stems.
  • Pro-Graad TwistFlex Cylinder Honing & Deburring Tool brushes have round abrasive spheres fastened to ends of flexible stems, which produces pressure and finishing evenly and consistently. For Engine Cylinders, Brake Cylinders, Hydraulics and Valve Guides.
  • The Pro-Graad TwistFlex Cylinder Honing & Deburring Tool can be run with hand tools, drill press, or CNC equipment. Apply a lubricant liberally such as a honing tool lubricant, 10-30 weight motor oil, or transmission fluid prior to using honing tool brush. Max RPM is 1200, however optimum range is 600 - 800 RPM. Tip: If producing cross-hatching pattern, less is best - maximum of two passes should be done with brush within 20-45 seconds of total run time, averaging between 10-55 strokes.
  • The 3/4 inch TwistFlex Cylinder Honing & Deburring Tool is self-centering, self-aligning and will conform to the bore diameter to provide consistent surface finishing, as well as deburring any cross-drilled holes. The brush is self-compensating to produce a consistent finish throughout the life of the tool.
  • All Pro-Graad products are made with quality materials, which exceed industrial grade standards. We are driven to deliver high-quality, high-performing products to the end user. This is why we stand behind our 100% Product Guarantee. If you are not satisfied with the product, simply return your purchase within 30 days, and we will replace or refund your order. Pro-Graad is an American Company with US Based Customer Support.


Product Description

Flex Hone brushes have round abrasive globules fastened to ends of flexible stems.

TwistFlex Cylinder Honing & Deburring Tool

The Pro-Graad TwistFlex Cylinder Honing & Deburring Tool is ideal for automotive and industrial applications: cross-hatching, finishing, de-glazing, deburring of cylinders/chambers, air compressor cylinders, brake/valve/wheel cylinders, firearm barrels, hydraulic and pneumatic cylinder finishing.

Pro-Graad TwistFlex Cylinder Honing & Deburring Tools are manufactured oversized - ORDER BY THE HOLE SIZE. The brush will be approximately ten percent oversized, but will easily conform and fit into the bore size diameter due to the flexibility of the tool stems. Surface finishing of the Pro-Graad TwistFlex Cylinder Honing & Deburring Tool allows for a proper ring, seal, and oil control. Pro-Graad TwistFlex Cylinder Honing & Deburring Tools produce a consistent cross-hatching pattern which is ideal to seat piston rings and retain oil for lubrication in combustion chambers. Due to the flexible nature of the Pro-Graad TwistFlex Cylinder Honing & Deburring Tool, it is self-centering, self-aligning, and self-compensating for wear, producing a consistent finish and performance throughout the life of the tool.

Customer Reviews
4.6 out of 5 stars 122
3.6 out of 5 stars 6
4.6 out of 5 stars 122
4.8 out of 5 stars 10
5.0 out of 5 stars 6
4.6 out of 5 stars 3
Size 2-1/2 inches 3 inch 3-1/4 inches 4 inch 4-1/8 inches 4-1/4 inches
Overall Length 8 inches 13.5 inches 13.5 inches 13.5 inches 13.5 inches 13.5 inches
Shank 0.25" 6.35mm 0.315" 8mm 0.315" 8mm 0.354" 9mm 0.354" 9mm 0.354" 9mm
Abrasive Silicon Carbide Silicon Carbide Silicon Carbide Silicon Carbide Silicon Carbide Silicon Carbide
Grit 240 240 240 240 240 240
For Hole Diameters 2.2"- 2.52" 2.80" - 3.02" 3.00" - 3.27" 3.80" - 4.02" 3.90" - 4.15" 4.00" - 4.27"
Customer Reviews
4.5 out of 5 stars 12
4.4 out of 5 stars 7
Size 3/4 inch 3/4 inch
Overall Length 8 inches 8 inches
Shank 0.25" 6.35mm 0.25" 6.35mm
Abrasive Aluminum Oxide Silicon Carbide
Grit 240 320
For Hole Diameters 0.65" - 0.77" 0.65" - 0.77"

James D.
Reviewed in the United States on November 2, 2024
This is a very good deal on a flex hone. It worked to perfection.
Darryl K.
Reviewed in the United States on November 15, 2024
Honed the lifter bores in my small block mopar
Tom
Reviewed in the United States on November 4, 2023
Smoothes and brightens an old 12 ga shotgun barrel nicely. Good to buff up the chamber throats also.