Needle bearing with reverse lock for roller skis from Marwe. This part is only compatible with Marwe setups utilizing the Ratchet wheels. The 17 refers to the spare part number for this specific piece which is also found on the exploded view drawings that come with each pair of Marwe skis.
Outside diameter: 20mm
Inside diameter: 14mm
Notice: Does not fit SkiGo Rollerski.
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