Listed here are a set of 8 machined aluminum Hilborn stacks in 1/24 scale.

These are from a job I did for another customer. Not sure what particular application or kit he was using them in so i took a pic along with a ruler so you could compare them for your own personal needs or use. Upper diameter at top lip is .115". Sidewall diameter is .082" with an overall length of .350". Bore goes near bottom but not through. A short stem is at bottom for easy installation. Very fine finish that would not be tough to polish out if needed.