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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🛠️ Drill Like a Pro, Last Like a Legend

PRECISION STABILITY - Thick web-helix design ensures fast material removal and superior bit control.
UNMATCHED DURABILITY - Engineered with 8% cobalt alloy delivering 10x longer life than standard bits.
ERGONOMIC GRIP RANGE - Includes 14 jobber-length bits with split points and three-flat shanks for secure handling.
VERSATILE METAL MASTERY - Effortlessly drills stainless steel, cast iron, titanium, and aluminum with hardened tips.
HEAT RESISTANT PERFORMANCE - Withstands extreme temperatures, perfect for high-heat drilling applications.

The Bosch CO14B 14 Pc. Cobalt M42 Drill Bit Set features premium 8% cobalt alloy bits that deliver 10x the lifespan of standard drill bits. Designed for high-heat resistance and enhanced stability with a thick web-helix design, this set excels in drilling tough metals like stainless steel, titanium, and cast iron. With 14 precision sizes and ergonomic shanks, it’s the ultimate upgrade for professionals demanding durability and performance.

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Manufacturer	BOSCH
Part number	CO14B
Item Weight	454 g
Item model number	CO14B
Size	14 pc. Drill Bit Set
Color	Solid Black
Style	Classic
Finish	Titanium
Material	Stainless Steel Cobalt
Pattern	Solid
Shape	Rectangular
Power source type	Hand_powered
Item Package Quantity	1
Number Of Pieces	14
Measurement System	Inch
Included components	14 Drill Bits; Case
Batteries Included?	No
Batteries Required?	No

Bosch CO14B 14 Pc. Cobalt M42 Drill Bit Set

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