Review on Fielect Diameter Double Deck Protector Grommets Industrial Hardware by Deejay Devarashetty

Well there isn't much to say about rubber bushings but their quality is satisfactory. Nothing that would blow my mind, but judging by my calipers they were normal. I have the 4mm size that I used to mount the hard drive. These are essentially the same bushings you get in a "shockproof hard drive bracket" (actually the exact same ones I've gotten in a few batches), but a lot cheaper when bought that way. If you want to do the same, grab these and some 6-32 screws (I think I chose 1/2 inch) and you're good to go.