Length of the bits for each diameter?

"Hi there, please see the following model with diameter and length size of the bits that comes in CO14B; CO2131 - 1/16"" - 1.875"" CO2132 - 5/64"" - 2.0"" CO2133 - 3/32"" - 2.5"" CO2134 - 7/64"" - 2.625"" CO2135 - 1/8"" - 2.75"" CO2136 - 9/64"" - 2.875"" CO2137 - 5/32"" - 3.125"" CO2139B - 3/16"" - 3.5"" CO4141 - 7/32"" - 3.75"" CO2145 - 1/4"" - 4.5"" CO2147 - 5/16"" - 4.5"" CO2151 - 3/8"" - 5.0"" CO2159 1/2"" - 6.0"" For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST."

Where is the 5/64" individual bit? (The only one I need to replace, of course!)

You always have to order any single bit or bit replacement separately, unless you can convince the company otherwise.

Does Bosch make a metric set????

This COB14B Drill bit set is at a standard or imperial measurement. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

Do either of the sets come with a bit holder? If not, what size bit holder would work?

The CO14B set doesn't come with a bit holder. The bits will work with drills that caters straight shank bits and three-flat shank bits. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7AM-7PM CST.

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Specifications

ASIN	B07Q9HNTBH
Best Sellers Rank	#333,615 in Home Improvement ( See Top 100 in Home Improvement ) #2,494 in Drill Bit Sets
Brand	Bosch
Brand Name	Bosch
Customer Reviews	4.6 out of 5 stars 2,526 Reviews
Cutting Angle String	135 Degrees
Finish Type	Titanium
Finish Types	Titanium
Global Trade Identification Number	00000346594591
Item Weight	1 Pounds
Manufacturer	bosch
Material	Cobalt
Material Type	Cobalt
Minimum Bore Diameter	0.06 Inches
Model Number	CO14B
Number of Flutes	3
Point Style	Split Point
Shank Type	Straight
Surface Recommendation	Metal
UPC	000346594591
Unit Count	14.0 Count

Reviews

J**.

Calidad inmejorable

Las mejores brocas, que puedes encontrar en el mercado para perforar, el hierro forjado y el acero inoxidable

20.05.2025

E**H

very good service

18.11.2025

L**I

forets à métaux de très bonne qualité

Impeccable - de très bonne qualité - pas besoin de forcer - à voir à l'usage mais je reste confiante

3.01.2026

K**O

Qualità

Punte di ottima qualità, le uso sia per ferro o acciaio, e anche resina visto che lavoro nel nautico. Unica cosa che avrei dovuto notare prima, ma nulla di ché, le punte sono in pollici. Ma alla fine lavorano perfettamente e posso trapanare quasi tutto come burro

7.12.2025

P**Z

Hasta ahora buena calidad

Mejor que las que compramos en el Pueblo (hidalgo) ya aviamos comprado de otras marcas pero fue Perdida de Dinero. Lo Varato sale caro

9.03.2026

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

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Bosch CO14B 14 Pc. Cobalt M42 Drill Bit Set

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