Fits original model Guide RSC, Guide RS, Guide R, that do not have the S4 caliper (calipers that don't require the bleeding edge tool.). Also fits Level TL and DB5. Guide RSC/RS/R, DB5, Level TL. Fits the second generation Guide R, Guide RS and Guide RSC brakes that use the S4 caliper - calipers that do require the bleeding edge tool to bleed them.
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