2" Wheel Diameter | Black Nylon Swivel Hooded Samson Twin Wheel Caster with Brake | and 1/4-20 x 1/2" Threaded Stem | Installed mounting height: 2-5/16''| 4 Pack

Couldn't locate any help to select correct size..so googles and found a seller who explained sizing. Caster stem screw on couldn't determine measurement of stem..Other seller suggest taking to Hardware store..sure enough..they had a number of options found right bold size so knew the size to order for screw in stem. As for length just measure length of stem. Would have been SOOO HELPFUL if that was suggested here.Would prefer these casters..made better but Outwater Premium doesn't carry the right size.

Used as an after market add in for a PC case that did not include wheels.The 1/2" by 1/4" threads gave me the room and strength to add in the hardware I needed to reinforce my case as well as provide the mobility I needed to work in it as needed when upgrading or maintaining the hardware inside my PC.I am writing this review after over one year of solid performance!

As stated above, we're very happy with these rollers. Used for heavy metal/glass coffee table that tapped 1/4-20.Installed in seconds and the ~1/2" long stem was ideal as any longer would not have fit. Shipped very quickly.

These casters were perfect for my rolling wire shelf. I needed the versatility of being able to wheel my shelf across my craft room, and these help do the trick! Seem sturdy and well-made.

Works perfect, only problem is one of the wheels decides to lock the brakes at random, not enough to care

added wheels to my large wire rack so could be moved easier for cleaning