You are buying a completeREARaxle seal and piston kit 2x Return springs Bleed screws enough for(2) Calipers Models withLUCAS/GIRLING single34mmdiameter piston calipers It is necessary to retain all the internal components from your old piston and refit into the new shell. In most cases this will involve removing the existing Circlip or Snap-ring to withdraw the mechanism, before re-fitting into the new Piston.
