Chain sprocket lock washer, smaller - ČZ and Pionýr

For motorcycles: Jawa-ČZ 125,175 (355,356), Jawa 50 Pionýr all types, ČZ 125,175,250 (453,450,455,473,470,475), ČZ 175 scooter, rickshaw (501,502,505), MZ 125,150 ETZ. Not suitable for: ČZ 476 - 488, which has a larger hub than the large Jawa