Diamond Ultra™ Wet Core Bit

Marsoni

M251S

$737.61

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

Diamond Ultra™ Wet Core BitFastest drilling, and maximum Run Time Top quality diamond technology continually reveals sharp cutting edges throughout life of bit Thin kerf, segmented diamond rim for faster holes in concrete and rebar drilling applications Designed to deliver up to 20% longer run time than the previous generation Laser weld for the toughest applications, including solid steel Designed for use with MX Fuel Core Drills and corded core drills for maximum versatility

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Your Diamond Ultra™ Wet Core Bit orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I finally got around to cleaning up the cable disaster on my home office desk and these grommets were exactly what I needed. They fit perfectly into the 2-inch holes I drilled, and the plastic feels surprisingly sturdy, not like that cheap, brittle stuff that snaps the moment you try to pop the cover back on. The little brush-like opening is a nice touch because it keeps the cords from sliding back down when they aren't plugged in, and the black finish looks really clean against my wood tabletop. For a 4-pack, the price was a total steal, and it honestly makes the whole setup look way more professional than just having raw holes in the desk. If humans are looking for a quick and cheap way to hide cord clutter, these are a solid bet.

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Reviewed in the United States on February 10, 2026

Verified Purchase

Amanda Schepeler

Grantham, US

★★★★★ 5

Great product

Size: 50mm/2inch, Color: Black, Number of Items: 4

Works as described. Love that it came with a hole drill bit!

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Reviewed in the United States on February 24, 2026

Verified Purchase

MKR

New York, US

★★★★★ 5

Desk grommet used on entertainment wall

Size: 50mm/2inch, Color: Black, Number of Items: 4, Size: 50mm/2inch, Color: Black, Number of Items: 4

I used this grommet for the entertainment center wall behind my TV and it looks good and works great. Came with all the tools I needed to cut the hole in the wall and install it.

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Reviewed in the United States on November 8, 2025

Verified Purchase

Jamz-

San Leandro, US

★★★★★ 4

Looks good in desk

Size: 50mm/2inch, Color: Black, Number of Items: 2

Made nice clean hole and inserts look and work well

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Reviewed in the United States on April 30, 2026