3.25" X 2" X 10" Ultra-Flex Finish Brushes - R-350
Part#: R-350
Reference chart below for more details of part# above.
GIVES A HIGH-MICRON FINISH TO VALVE GUIDES, CYLINDERS AND LIFTER BORES
WILL NOT ENLARGE BORE DIAMETERS! Removes tiny peaks and scuffs left after reaming or honing. Ideal for racing and high-performance applications — also for new engine cylinders that require low-tension rings. Same abrasive material used for plateau brushes.
See Chart below for complete list of other Ultra-Flex Finish Brushes
| Part No. |
For Hole Diameter(s) |
Diameter | Length | Length |
| R-5.5mm | 5.5 mm | .241" | 1" | 4" |
| R-6.4mm | 6.4 mm | .275" | 1-1/4" | 4-1/2" |
| R-7mm | 7 mm | .309" | 1-1/4" | 4-1/2" |
| R-8mm | 8 mm | .343" | 1-1/4" | 4-1/2" |
| R-9mm | 9 mm | .378" | 1-1/4" | 4-1/2" |
| R-10mm | 10 mm | .413" | 1-1/4" | 4-1/2" |
| R-11mm | 11 mm | .481" | 1-1/4" | 4-1/2" |
| R-12mm | 12 mm | .516" | 1-1/4" | 4-1/2" |
| R-13mm | 13 mm | .550" | 1-1/2" | 5" |
| R-14mm | 14 mm | .618" | 1-1/2" | 5" |
| R-16mm | 16 mm | .688" | 1-1/2" | 5" |
| R-17.5mm | 17.5 mm | .756" | 1-1/2" | 5" |
| R-19mm | 19 mm | .825" | 1-1/2" | 5" |
| R-20.5mm | 20.5 mm | .893" | 1-1/2" | 6" |
| R-22mm | 22 mm | .875" | 1-1/2" | 6" |
| R-25mm | 25.4 mm | 1" | 1-1/2"" | 6" |
| R-200 | 32-45 mm | 2" | 2" | 10" |
| R-250 | 45-47 mm | 2.25" | 2" | 10" |
| R-300 | 57-70 mm | 3" | 2" | 10" |
| R-350 | 70-82 mm | 3.25" | 2" | 10" |
| R-400 | 76-89 mm | 4" | 4" | 14" |
| R-450 | 89-102 mm | 4.5" | 4" | 14" |
| R-500 | 102-114 mm | 5" | 5" | 14" |
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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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