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BOSCH CO2139B 3/16 in. x 3-1/2 in. Cobalt M42 Drill Bit (Pack of 2)

BOSCH CO2139B 3/16 in. x 3-1/2 in. Cobalt M42 Drill Bit (Pack of 2)

Bosch

BOSCH CO2139B 3/16 in. x 3-1/2 in. Cobalt M42 Drill Bit (Pack of 2)

✅ In stock

F

Grade

💤 Not a Deal

4/100

Current Price

$23.58

Listed $19.97

Analysis Confidence 88%

⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.

Check Deal at Amazon

Price verified Sep 25, 2026 3:28 AM · Prices & availability subject to change

Is This a Good Price on Amazon?

💤 Not a Deal

💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
💰At 104% above its usual rate, this is currently priced higher than what most shoppers have paid.
📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
➡️Pricing has held fairly steady, with no strong push in either direction.

How We Scored This Deal

Price Competitiveness 0/28

Recent Value 0/22

Market Standing 0/20

Deal Strength 0/20

Momentum 4/10

📝 Product Overview

🏪 Sold by Amazon.com

🚚 Shipping Free Shipping

Product Details

✓The information below is per-pack only

✓COBALT M42 DRILL BIT: Provides upgraded m42 cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum

✓ENHANCED M42 ALLOY MATERIAL: Contains 8% cobalt alloy that delivers 10x life vs. standard bits

✓HIGH-HEAT RESISTANT BITS: Withstand high-temperature applications for extended periods of time

✓THICK WEB-HELIX DESIGN: Provides additional stability in tough applications

✓SURFACE-HARDENED TIP: Penetrates tough abrasive materials

✓SPLIT POINTS ON BITS 1/8 IN. AND LARGER: Allow for easy starts with no skating, eliminating the need for a center punch

✓THREE-FLAT SHANK ON BITS 3/16 IN. AND LARGER: Deliver better bit grip

⚙️ Specifications

Material

Cobalt

Finish Type

Titanium

Shank Type

Straight

Brand

Bosch

Tool Flute Type

Spiral

Point Style

Step Point

Surface Recommendation

Aluminum

Number of Flutes

2

Unit Count

2 Count

Manufacturer

BOSCH

Number of Pieces

2

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F

$23.58