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Kobalt 21 -Piece Assorted Assorted Titanium Jobber length Twist Drill Bit Set

Name: Kobalt 21 -Piece Assorted Assorted Titanium Jobber length Twist Drill Bit Set
Brand: Kobalt
SKU: 3440518
Rating: 3.8 (398 reviews)

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3.8

398

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General
Material	Titanium	Type	Jobber length
Package Quantity	21	Shank Type	Hex

Dimensions
Maximum Drilling Depth	3-in	Bit Diameter (Letter)	Assorted
Bit Diameter (Inches)	Assorted	Shank Size	1/4-in
Bit Diameter (Number)	Assorted	Bit Length	Set
Bit Diameter (mm)	Assorted

Features
Heavy Duty	Yes	Set/Individual	Set
Right/Left Hand	Right handed	Tip Geometry	135-degree split-point

Compatibility
For Use on Fiberglass	Yes	For Use on PVC	Yes
For Use on Metal	Yes	For Use on Stainless Steel	No
For Use on Wood	Yes	Compatible Tool	Drills/Impact drivers

Warranty
Warranty	None

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Miscellaneous
UNSPSC	20121600

Check out the Best Selling Twist Drill Bits on Lowes.com

Review

3.8 out of 5

398 Reviews

67% Recommend this product

Ratings may include incentivized customer reviews.

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+ 6

What Customers Are Saying

The drill bit set has received mixed reviews. Some customers found the bits to be of good quality, with the bits remaining sharp and durable even after repeated use. The quick-change feature was also praised for making it easy to switch between drill bits and driver bits. However, a significant number of customers reported issues with the quality and durability of the drill bits, with many complaining that the bits broke easily, even when drilling through relatively soft materials. Some customers also noted problems with the bits being misaligned or wobbly in the chuck, and the case design was criticized by some as being flimsy and poorly made.

Customer review summary generated by AI, including incentivized reviews.

396 Customer Reviews

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Not too sharp after using several times

Would Not Recommend

I have a craftman drill bits that I used for more than 10 years, that still drill 2x4 lumber with no problem smoothly. But when I used this Kobalt drill bit, it took too much effort just to drill the 2x4 lumber using the 1/8, and then it snapped. I switched it back to my old drill bit, it performed with no issue. I am not happy with this drill bit set.

JamesJuly 31, 2026

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Drill bits GOOD. The case is NOT GOOD

Would Not Recommend

K the case design would be my only problem that I’ve had w this set up is the cheep flimsy lil yellow tab junk they have goin the bits do not hold in their placed spots. Very unhappy w that. Now the bits they are pretty good for the abuse I’ve put them thru.

LuisMarch 25, 2026
Verified Purchaser

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Great drills

Would Recommend

Drill bits were great. Only problem was case lock Came off

Marko25December 19, 2025
Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item Kobalt21 -Piece Assorted Assorted Titanium Jobber length Twist Drill Bit Set
		Ratings	398
		Bit Diameter (Inches)	Assorted
		Material	Titanium
		For Use on Metal
Kobalt14 -Piece Assorted Assorted Titanium coated HSS Jobber length Twist Drill Bit Set	DEWALT21 -Piece Assorted Assorted Black and gold coated HSS Jobber length Twist Drill Bit Set	DEWALT23 -Piece Titanium Nitride Coated HSS Jobber Length Twist Drill Bit Set	DEWALT14 -Piece Assorted Assorted Titanium nitride coated HSS Jobber length Twist Drill Bit Set	Kobalt21 -Piece Assorted Assorted Titanium coated HSS Jobber length Twist Drill Bit Set	DEWALT21 -Piece Assorted Assorted Titanium nitride coated HSS Jobber length Twist Drill Bit Set	SpyderStinger Mach-Blue 10 -Piece 1/4-in High-speed Steel Jobber Length Twist Drill Bit Set	Kobalt29 -Piece Titanium Coated HSS Jobber Length Twist Drill Bit Set	Kobalt14 -Piece Black and gold Coated HSS Jobber Length Twist Drill Bit Set
256	441	137	536	256	328	284	61	37
Assorted	Assorted	Assorted	Assorted	Assorted	Assorted	Assorted	Assorted	Assorted
Titanium coated HSS	Black and gold coated HSS	Titanium nitride coated HSS	Titanium nitride coated HSS	Titanium coated HSS	Titanium nitride coated HSS	High-speed steel	Titanium coated HSS	Black and gold coated HSS