Axle caps for OTS

[Foundry37]

I picked up a my first Weber yesterday! A used OTS that needs some minor TLC. 
As I was rolling down the block to load it in the car a wheel popped off.  I noticed that previous owner wrapped some electrical tape around the axle to keep it on.  I really want to find some replacement caps for the axle.  Can one of you fine folks help point me in right direction?

[Mr.CPHo]

Local hardware store, Ace, Lowes, or Home Depot.

Yes, another thread on the black plastic hubcap pushnut replacement
http://weberkettleclub.com/forums/index.php?topic=7089


Sent from my iPhone using Weber Kettle Club mobile app

[Foundry37]

Local hardware store, Ace, Lowes, or Home Depot.

Yes, another thread on the black plastic hubcap pushnut replacement
http://weberkettleclub.com/forums/index.php?topic=7089


Sent from my iPhone using Weber Kettle Club mobile app

I guess search can be my friend.  Glad to know that this seems to be a common issue.
Thanks for info