What size e-clips for traxxas shock shafts
 

Hi guys, had to rebuild a shock due to a bent shaft.

When removing one of the eclips a magical fairy made one disappear across the workshop with no hope of recovery.

I happened to have a couple of extras.

I am going to order a few more but my local store is pretty expensive and online the traxxas ones are sold out from where I usually order from.

I have a choice of other sizes from other makers. They are 2mm 2.5mm and 3mm.

Which ones should I get??