Compatible for: B66 & B67 / B66 S & B67 S / B72 & B73 / B68 & B68 S / B17 Standard, B17 Standard S & B17 Narrow / Flyer & Flyer S / B33, B135 & B190 / Swallow in all of its versions / Aged range of saddles / Imperial range of saddles.
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