Best 1/2 Inch Roundover Router Bit (2026): 5 Picks Compared

Specs compared

Specifications are maker rated, as published on each listing and collected 30 October 2026. A spec the listing does not publish is shown as Not stated.

What the listings tell you, and what they leave out

All five listings give a 1/2-inch radius. Two state a 1/4-inch shank and three state a 1/2-inch shank. Two name a bearing guide or a bearing diameter, and three state no bearing. Two state an RPM limit, one states speeds over 22,000 RPM, and two state no speed figure. No listing states a warranty term, and only the Freud listing names a warranty at all, without a term.

Cutting diameter is another gap: only the FivePears, XDENGP and Freud listings state one. Cutting depth appears only on the Yonico listing. Read the listing, not the headline, before buying: the Freud spec table dimensions do not match its bullet specs, as noted in its review.

Buying guide: choosing the best 1/2 inch roundover router bit

Shank size

A 1/4-inch shank suits routers that take 1/4-inch shanks, while a 1/2-inch shank suits routers that take 1/2-inch shanks. The NICAVKIT and Freud bits use a 1/4-inch shank; the Yonico, FivePears and XDENGP bits use a 1/2-inch shank. Check the shank size before buying, since the listings give no adapter. For beveled edges instead of rounded ones, see best chamfer bit for router.

Bearing guide

A bearing guide follows the edge of the workpiece. The NICAVKIT bit includes a bearing guide, and the Freud bit lists a 1/2-inch bearing diameter. The Yonico, FivePears and XDENGP listings state no bearing, so check the listing before buying a bit for edge-following work. See bearing vs bearingless router bit for the difference.

RPM limits

Two listings state an RPM limit: FivePears at 12000 RPM and XDENGP at 16000 RPM. Freud lists speeds over 22,000 RPM. The Yonico and NICAVKIT listings state no speed figure. Stay within the listed limit for the bit in hand, and note the clamp lines the FivePears, XDENGP and NICAVKIT listings give for safe mounting.

Materials

NICAVKIT, FivePears, XDENGP and Freud name wood materials. Yonico names surface edges and small moldings without naming a material. Three listings warn against metal: NICAVKIT, FivePears and XDENGP all say not to cut steel, iron or sand. Freud names hardwood, softwood, plywood and composites, with no metal warning stated.

Project Match

• Small moldings: Yonico 13166, with a 1/2-inch cutting depth.
• Hardwood, softwood, MDF, chipboard, plywood and acrylic: NICAVKIT Roundover, with a bearing guide and a 1/4-inch shank.
• Wood, MDF, particleboard, plywood, compact panels and acrylic: FivePears Roundover and XDENGP Roundover, with a 1/2-inch shank.
• Doors, drawers and moldings: Freud 34-116, with 4 cutters and a 1/2-inch bearing diameter.
• CNC work: NICAVKIT Roundover and Freud 34-116, whose listings name CNC routers.

How the scores add up

Each bit is scored on performance, build, value, safety and warranty, with the weights published on our How We Pick page. A spec the listing does not publish scores nothing. Four of the five listings state an anti-kickback design; the Yonico listing states none, so its safety score is zero. No listing states a warranty term, so every warranty score is zero.

Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.

FAQ: lasers and CNC

What does a 1/2-inch roundover bit do?

It rounds over a square edge to a 1/2-inch radius profile. All five bits here list a 1/2-inch radius.

Do I need a bearing guide?

A bearing guide follows the edge. The NICAVKIT bit includes one and the Freud bit lists a 1/2-inch bearing diameter; the other three listings state no bearing.

What shank size should I choose?

Match the shank to the router. NICAVKIT and Freud use a 1/4-inch shank; Yonico, FivePears and XDENGP use a 1/2-inch shank.

What materials can these bits cut?

The listings name hardwood, softwood, MDF, plywood, acrylic, particleboard and composites, depending on the bit. Three listings warn against cutting steel, iron and sand.

Related: the CNC tooling hub, best chamfer bit for router, and best bevel router bit with bearing.