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Bosch 3/8-in Carbide-tipped Roundover Router Bit

Name: Bosch 3/8-in Carbide-tipped Roundover Router Bit
Brand: Bosch
SKU: 1086639
Price: 33.98 USD
Availability: InStock
Rating: 4.9 (33 reviews)

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4.9

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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.

Micrograin carbide-tip router bit design – ensures consistently smooth finish cuts, with superior wear resistance
Control-cut roundover bit – smoothly radiused edges on boards and panels requires little or no sanding before applying finish
Compact ball-bearing pilot – guides bit along edge of material
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-exclusive heat-treating process – provides hardness and withstands high temperatures
Comprehensive line of bits – features hundreds of profiles for mortising, edge forming, trimming, surface forming, and cabinetry/joinery in wood, plastic and laminate

General
Sub-Brand	N/A	Bit Material	Carbide-tipped
Number of Flutes	2

Dimensions
Bearing Diameter	1/2-in	Overall Diameter	1-1/4-in
Bit Shank Diameter	1/2-in	Overall Length (Inches)	2.5625
Cutting Edge Length	5/8-in	Radius	3/8-in

Features
Bit Style	Roundover

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	1-year

Miscellaneous
UNSPSC	27112800

Check out the Best Selling Edge-Forming Router Bits on Lowes.com

Review

4.9 out of 5

33 Reviews

3 Star

2 Star

1 Star

100% Recommend this product

Ratings may include incentivized customer reviews.

33 Customer Reviews

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Great router tool.

Would Recommend

Exactly what I needed for deck rail edge.

HUNTERJune 22, 2026
From 1_SLASH_4-in Carbide-tipped Roundover Router Bit Verified Purchaser

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Good product

Would Recommend

Its a Bosch tool, no explanation needed!

DRPJMay 10, 2026
From 1_SLASH_4-in Carbide-tipped Roundover Router Bit Verified Purchaser

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Carbide router bit

Well designed and worked well on my project

DavePNovember 8, 2025
From 1_SLASH_4-in Carbide-tipped Roundover Router Bit Verified Purchaser

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Bullnose stair treads

Would Recommend

Bought this router bit to bullnose stair treads, it was high quality and cut the oak stair treads wit ease.

Jbshep40December 6, 2023
From 1_SLASH_4-in Carbide-tipped Roundover Router Bit Verified PurchaserIncentivized

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/555193f0-0393-5c81-8a42-50965d9eaf8e

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/c704683d-5045-5127-af0a-d59a8ee620dc

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/becbbf87-6a17-5e00-86ac-eee235147296

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Smooth

Would Recommend

Very easy to use, cutting edge is extremely sharp and guild bearing is smooth.

CrudaSeptember 17, 2023
From 1_SLASH_4-in Carbide-tipped Roundover Router Bit Verified PurchaserIncentivized

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Bosch 3/8-in Carbide-tipped Roundover Router Bit