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Deluxe Duet Casters, Polyurethane, B and K Stems, 110 lbs./Caster, 5/Set

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MAS23624 Thumbnail 1 MAS23624 Thumbnail 2 MAS23624 Thumbnail 3 MAS23624 Thumbnail 4 MAS23624 Thumbnail 5 MAS23624 Thumbnail 6
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Item #: MAS23624   by Master Caster®
$32.59 USD/ST
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Product Details

Deluxe Duet Casters, Polyurethane, B and K Stems, 110 lbs./Caster, 5/Set

Contemporary design, strength and performance make these replacement casters an excellent choice for office and home furnishings. With appropriate stems and fasteners, each caster can be used on wood, metal and tubular metal chairs, furniture and other equipment. All casters carry the manufacturer's guarantee against defects in material and workmanship. To ensure proper support and safe rolling, neck must fit 1-1/2" diameter chair base so that base and caster fit together as a solid unit. HOW TO SELECT CASTERS:1. Remove caster from leg of chair base. 2. Match the stem of the caster to diagram. Select the correct length and diameter. (Tops of stems can be flat or rounded—either will fit.) 3. Determine if caster is to be used on chair mats, hard floors or carpeting. Choose soft wheel casters for use on chair mats, linoleum (vinyl), and hard floors; hard wheel casters for carpeting.

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Item Specifications
Brand Master Caster®
Global Product Type Casters & Glides-Dual-Wheel Casters
Caster/Glide/Wheel Dual 2" Hooded Casters
Color Matte Black
Stem Type B, K
Weight Capacity (text) 110 lbs. Per Caster
Wheel Tread Soft
Material(s) Polyurethane
For Use On Chair Mats, Hard Floors
Caster Quantity 5 per set
Stem Size (W x H) 3/8" x 7/8", 7/16" x 7/8"
Pre-Consumer Recycled Content Percent 0%
Post-Consumer Recycled Content Percent 0%
Total Recycled Content Percent 0%
Special Features Deluxe Duet Casters

Dimensions / Specifications
Unit of Measure ST
Item Weight 1.632 lbs
Ships via UPS? y
Carton Pack Quantity 1 ST
Pack Quantity 5 EA
This item is sold by the ST which contains 5 EA
Warranty Comments Manufacturer's limited lifetime warranty.

Catalog Information
Catalog Page No.'s EVERYTHING FOR THE WORKPLACE 2012: Page 191

Manufacturer Info
Brand Master Caster®  (website)
Brand Contact 800-323-5513
Manufacturer Stock No. 23624
Retail UPC 034238236245
Country of Origin TW
Tariff (Inbound) Code
UNSPSC Number 56112107
Meets ANSI/BIFMA? 034238236245
OTS Product ID 9466533

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Customer Questions

Lori van Dam
will these fit a Herman Miller Aeron chair? Thanks. September 5, 2013
On Time Supplies Retailer

Hello Lori,


Thank you very much about your question to see if these casters will fit your Herman Miller Aeron chair.  Since Herman Miller has several variations of their chair I would suggest looking out our "Chair Caster Furniture Guide."  It will explain and help you fit the perfect caster for any chair, including the Herman Miller Aeron chair caster.  Here is the link and I hope this helps.  Just follow the instructions, place your order on-line and you will have your casters in a couple of days!


Chair Caster Furniture Guide


Thanks again!



Phil C
I need stemless casters. Do these arrive with stems out? April 13, 2016
Frankye OnTimeSupplies.com

Master Caster® Deluxe Casters are not stemless casters. Though some casters are shipped disassembled, the wheels will only fit the included stems. 

We offer stemless casters via special order. These stemless casters only fit metal chair bases with welded stems. The welded stems must be 3/8" dia, and up to 1 5/16" long. If you would like to learn more about special ordering stemless casters, please give us a call at 1-866-501-6055.

Edward Stone
My office chair has five casters. The currents are made by Shepherd, the wheel is about 2 1/4 inches. I tried to remove the caster from the chair and the caster pulled off the shaft but I was expecting the shaft to pull out the the wooden leg. The chair is used on carpet. Please advise what I should use and also should the shaft come out of the wood part of the chair? Thank you, Edward August 4, 2014
Frankye OnTimeSupplies.com

Since your chair sits on a carpeted floor, you'll need hard wheel casters.

Now, there are two types wooden office chair bases: wood-clad and solid wood. Wood clad chair bases have metal cores, so it's possible that your caster stems are welded to the inner metal core. In that case, you'll need stemless hard wheel casters, available via special order. Just give us a call at 866-501-6055 and we'll take care of you. 

If your chair has a solid wood base, you have to remove the old caster stems. This can be very difficult. We recommend prying the stems out with the claw side of a hammer. It may take some strength and determination! Good luck!

Once you have the stems out, you can install a new set of W-Stem Hard Wheel Casters. This is also a special order item. Again, give us a call at 866-501-6055 and we'll set you right up. Our hours are M-Th 9a-6p, Fr 9a-5p EST. We're closed Sat, Sun and major holidays. 

Item #: MAS23622 my chair is the "male" and I need the female of the Caster..... this set look like includes or can function as both am I correct? I need the K size . thank you ! May 9, 2013
On Time Supplies Retailer

Thanks so much for your question about the Master Caster Deluxe Casters.  This is such an interesting question because there are so many variable to consider when choosing the right caster such as stem size, material, and the flooring it would be used on.


Speaking to your question, specifically, about the MAS23622, these casters come 5 per set and include 5 "K" stems and 5 "B" stems and would not be considered "female" casters.


When you indicate that your chair is a "male" it sounds like you have what is called a welded base with stem.  These types of chairs require a stemless caster like the one pictured in the link.  


Hope this answers your question.  Please remember that On Time Supplies offers time saving features like super fast delivery, online chat options, bulk pricing listed on the site as well as our best price up front.  We carry over 40,000 office supplies at discounted prices with most items ready to ship the same day.  We pride ourselves on offering world-class customer service and look forward to serving you.


Have a great day!




The stem for the castor is a permanent part of the chair base. It looks to be 5/16 diameter. What should I buy to replace my broken castor? Thanks February 7, 2014
On Time Supplies Retailer

Hi Joe,

Thank you for your question about Master Caster Deluxe Casters.

Master Caster makes stemless casters specifically designed for chairs with welded stems. However, almost all chairs of that type have stems that are 3/8" diameter. Before you buy, please re-measure your stems. Stemless casters can only be applied to 3/8" diameter stems.

If you re-measure and find that your stems are indeed 5/16" diameter, I am 99.9% sure they can be removed. Of course, that is sometimes easier said than done!  If you are having trouble removing your chair stems, try using the claw side of a hammer to work them out of the base. A little WD-40 wouldn't hurt at this point either. 

No matter what type of stem you use, make sure you get the right type of wheel for your flooring. Hard wheel casters for carpeted floors, soft wheel for hard floors and chair mats.

Hope this helps!




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Helpful Guides and Articles

Article Thumbnail How to replace your office chair casters.

You don't have to buy a new office chair just because a caster wheel breaks. Check out our inexpensive fix.   read more

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Discount Office Furniture Reference - SKU: MAS23624 - Deluxe Duet Casters, Polyurethane, B and K Stems, 110 lbs./Caster, 5/Set by Master Caster®
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