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BOSCH 85478MC 3/8 In. x 5/16 In. Carbide-Tipped Plunge Roundover Router Bit

5.0 (1) Write Review
Free shipping on orders over $29.99

$19.71

$ 9 .99 $9.99

In Stock

About this item

  • Micrograin carbide-tip router bit design – ensures consistently smooth finish cuts, with superior wear resistance
  • Shear-angle design – provides faster routing, cleaner cuts and extended life
  • Designed for grooving and edging – specially designed tip for fast plunge cutting
  • Reinforced shanks – feature fully hardened and tempered steel shanks that provide ultimate durability
  • Upgraded micrograin carbide – engineered for precise cuts and for long bit life


BOSCH Carbide-Tipped Router Bits deliver precision and durability. They feature premium-quality micrograin carbide tips that are engineered with a special heat-treating process for an extra-fine finish. The tips provide maximum sharpness and edge retention. The fully hardened and tempered steel shanks provide ultimate durability. These bits retain painstaking accuracy across hundreds of profiles for mortising, edge forming, trimming, surface forming, and cabinetry/joinery in wood, plastic and laminate.


James R Sachleben
Reviewed in the United States on April 26, 2022
It's as good a bit as you can get from bosch. It fits a very niche usage, but will do the job you want.