OK I'll start by saying I don't buy a lot off the internet unless it is absolutely necessary. Bought some wheel cylinders from a reputable parts supplier(I won't name any names here) as it was cheaper to get them from the States than it was here in NZ. Parts arrived quickly which was great , fitted them up and bled them. Ok so far. About a month later I see a drip of fluid on my left front tyre. After rechecking all connections, I pulled the drum off to find brake fluid all over my nice new brakes, the cylinder had pissed out majorly. I removed cylinder, stripped and inspected, nothing untoward, refitted, and the bastard still leaked. REmember, these were sold as NEW parts. Took it down to my local brake specialist. THE FINDINGS.... My new cylinder had been re honed and fitted with shitty taiwanese seals that were't even the right diameter for the bore. WTF??? They fixed it for not much money. Lesson learned, won't be shopping there again or taking anything for granted, especially something as important as brakes.