The seller was helpful and exceeded my expectations. I usually only buy online from Amazon.com, but Google's Trusted Stores feature was just as good.
This item is a special order from the manufacturer. Your order will typically ship in 5 to 20 business days.
Swivel caster (locking) - for: mmb10, rm
Swivel caster (locking) - for: mmb10, rmmb12 & rmmb14
Buy this part and as many parts as you like and pay only $9.99 shipping, within the Contiguous United States.