Brake caliper piston; renewal

[306Dan]

For when I'm refurbing I have a selection of old brake flexi's so I can screw them on then apply air down them, most of the time they come out into a rag no probs but sometimes you get ones that turn into a missile so be careful. I usually hold the caliper down to a bench so the piston can't escape and have a few rags in there so it doesn't damage itself.