MARTIN 40B12

Marsoni

M251S

$149.00

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

MARTIN 40B1240B12 ROLLER CHAIN SPROCKET STANDARD STOCK NO. 40 CHAIN 1 2 INCH PITCH TYPE B PLAIN BORE 1 2 INCH BORE DIAMETER 12 TEETH 7 8 INCH LENGTH THRU BORE 2. 17 INCH OUTER DIAMETER 1 9 16 INCH HUB DIAMETER SINGLE STRAND HUB RECESSED FOR CHAIN STEEL

Easy Shipping

Quick Dispatch:

Your MARTIN 40B12 orders ship within 1-2 business days.

Delivery Options:

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

Order Tracking:

You'll receive a tracking link by email once your MARTIN 40B12 ships.

Need Help?
Questions about MARTIN 40B12, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for MARTIN 40B12 in your area.

Get Shipping Estimates

Country Zip/Postal Code

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 have had these for about a week and so far i am not happy with them. They look good up but they are made only of thin particle board, the brackets do not not hold tight, i used the included Sheetrock holders and screws and i think the screws are to big for the holders and just dont hold well. Currently my shelves are empty because when i put something on them the shelves tilts forward. I am trying to decide if i can fix somehow or if I should just return them.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 13, 2026

Verified Purchase

Nikkita

Whiting, US

★★★★★ 5

Worth Getting 👍🏼

Color: Black, Size: 36"W x 12"D, 2Packs

Love these. Looks great on our kitchen wall. Sturdy. Holds quite a bit of dishes.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 17, 2026

Verified Purchase

Dawn Dski

Belleville, US

★★★★★ 5

Great product

We have ordered this item many times. Easy to install and looks great. My son uses them to store/display his car model collections. We also used one to hold a sound bar in the living room.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 1, 2025

Verified Purchase

vincent r syracuse jr.

Carnegie, US

★★★★★ 1

There junk.

Color: Walnut, Size: 55"W x 12"D, 2Packs

These shelves are junk ! I had to wait 3 months to get them because they shipped by mule train which is ridiculous. The metal brackets that attach to the wall are weak. The shelves sag. They are not level front to back. Do not waist your money on these.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 12, 2026

Verified Purchase

Mathias farnsworth

Boise, US

★★★★★ 5

No issues with item

Color: Black, Size: 30"W x 12"D, 2Packs

No issues or problems with item

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 28, 2026