7/16 x 5-1/2-In. Cobalt High-Speed Drill Bit

7/16 x 5-1/2-In. Cobalt High-Speed Drill Bit

Marsoni

M251S

$11.99

Get it in 3 business days with 1 day shipping. Friday, May 29

7/16 x 5-1/2-In. Cobalt High-Speed Drill BitMaster Mechanic, 7 16" x 5 1 2", High Speed Steel With Cobalt Drill Bit, 135 Split Point Design With 4 Cutting Edges Allows Quick Penetration & Eliminates Walking, 8% Cobalt Content Provides Heat Resistance & Delivers Maximum Cutting Efficiency At Temperatures In Excess Of 1000ree. F., Recommended For Drilling In Hard Metals Such As Heat Treated Steel, Stainless Steel, Chrome, Manganese Steel Plus Titanium & Armor Plate, Carded.

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They do seem to run a bit small. I bought them for my bf but snagged them from him because I couldn’t resist! I’m about a W8/12 and they were just a little big but unlike others, I just put them on while sleeping and didn’t walk around with them. If you’re just planning on that, they did a great job at sloughing and moisturizing 😎

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Reviewed in the United States on April 25, 2026

Verified Purchase

Aaron Duncan

Waukegan, US

★★★★★ 5

Good socks they work.

Size: 2 pairs black L

I normally wear size 13&half to 14 men's, and these fit me ok. They sit just below the ankle. They can get a little tight for me so you should look out for that if you are on the thicker side. But they work as advertised and help moisturize your feet. I recommend wearing them if you're going to just be hanging around home for a bit in one spot as they can be a little slippery to walk in if you go fast. Would not recommend going up and down stairs.

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Reviewed in the United States on August 28, 2025

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Brian

Belleville, US

★★★★★ 5

Good socks

Size: 1 pair black L

Good socks

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Reviewed in the United States on May 6, 2026

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Amazon Customer

Cuba, US

★★★★★ 3

REALLY unsafe to walk around in these

Size: 2 pairs black L

They do what they are expected to do, but should only be used if you are stationary. The gel base makes for very unstable footing if walking around

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Reviewed in the United States on May 27, 2026

Verified Purchase

Suz

Belleville, US

★★★★★ 5

These work

Size: 2 pairs black L

My husband loves these they help his very dry feet. As others have stated they are extremely difficult to walk in so have to be careful but they do work nicely.

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Reviewed in the United States on March 12, 2026