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Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit

Bosch

Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit

  • Roundover with flat bottom
  • Can be plunged into a surface
  • Produces roundover on inside corners
  • Carbide-tipped
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On this page

Is the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit worth it?

Yes, for the right buyer. The Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit ranks #8 in our Best Roundover Router Bit 2026 list (best plunge). Its biggest strength: plunge-cut capability allows roundovers on inside corners that a standard bearing-guided bit cannot reach. The main caveat: more expensive than standard bearing-guided roundover bits.

Overview

What the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit does well

Best plunge roundover bit. It stands out for plunge-cut capability allows roundovers on inside corners that a standard bearing-guided bit cannot reach and produces consistent roundover on curved cutouts, holes, and inside routed profiles. The tradeoff: more expensive than standard bearing-guided roundover bits.

Specs that matter

Key features

  • Roundover with flat bottom
  • Can be plunged into a surface
  • Produces roundover on inside corners
  • Carbide-tipped
The trade-offs

Pros & cons

Pros

  • Plunge-cut capability allows roundovers on inside corners that a standard bearing-guided bit cannot reach
  • Produces consistent roundover on curved cutouts, holes, and inside routed profiles
  • Premium micro-grain carbide construction for maximum edge retention
  • Fills the gap where a bearing-guided roundover cannot reach

Cons

  • More expensive than standard bearing-guided roundover bits
  • Requires plunge router -- cannot be used in a router table without modification
  • Specialized application -- most woodworkers do not need this regularly
Fit check

Should you buy the Bosch 85471M 1/4 In. x 1/2?

Think twice if this matters to you

  • More expensive than standard bearing-guided roundover bits
  • Requires plunge router -- cannot be used in a router table without modification
  • Specialized application -- most woodworkers do not need this regularly
Where it ranks

Featured in 1 best-of list

ListRank
Best Roundover Router Bit 2026· Best Plunge#8 / 8
Cross-shop

Alternatives to the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit

Products ranked near it in our research, each better for a slightly different buyer.

Buying advice: woodworking

  1. Clamps, a combination square, a good saw and a drill cover most beginner projects.
  2. You can never have too many. Bar clamps handle wide glue-ups; quick-grip clamps are fast for smaller work.
  3. Standard wood glue suits indoor projects. Water-resistant glue suits outdoor work and cutting boards.
  4. Oils are easy to apply and repair. Polyurethane and varnish protect tabletops and floors better.
  5. Eye and hearing protection and dust collection matter from the first project. Lay oily rags flat to dry to prevent fires.

Read the full guides

Answers

Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit: common questions

Is the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit worth buying?

Yes, for the right buyer. The Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit ranks #8 in our Best Roundover Router Bit 2026 list (best plunge). Its biggest strength: plunge-cut capability allows roundovers on inside corners that a standard bearing-guided bit cannot reach. The main caveat: more expensive than standard bearing-guided roundover bits.

What are the downsides of the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit?

The main trade-offs owners and reviewers point to: more expensive than standard bearing-guided roundover bits; requires plunge router -- cannot be used in a router table without modification; specialized application -- most woodworkers do not need this regularly.

What are the key features of the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit?

Roundover with flat bottom, Can be plunged into a surface, Produces roundover on inside corners and Carbide-tipped.

What are the best alternatives to the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit?

Worth comparing: Yonico 13622 Roundover Router Bit Set, 6 Bit, Freud 34-108 3/16-Inch Radius Rounding Over Bit and CMT 838.380.11 1/2-Inch Radius Roundover Bit. Each ranks near it in our research for a slightly different buyer.

Where can I buy the Bosch 85471M 1/4 In. x 1/2 In. Carbide Tipped Plunge Roundover Bit?

It's sold on Amazon. Prices and stock change often, so check the current listing before you buy, our link takes you straight to it.

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