Sell your stuff at The Official PhilMusic-Ads Facebook Group: https://www.facebook.com/groups/PhilmusicAds/
you can normally get 5/16" plastic tubing, the kind that is tinted very light green but is transparent. it is also reinforced with thread which is very visible. size is perfect for both the stand shaft and the cymbal hole.
Where do you guys buy spare/replacement cymbal sleeves? Nylon type like Pearl's? I usually use small garden hose type to remedy the problem but some does not fit the stands..