Switch spider into switch box with ammeter - JAWA, ČZ Note.: The black part is made of ABS plastic. The orange sheet is a flexible phosphor bronze sheet. Contacts are made of brass. Switching spider. Can be used for: Jawa 250 type 11 Pérák, year 1948-9 Jawa 250 type 11 Pérák, year 1950-4 Jawa 350 type 18 Pérák, year 1948-55 Jawa Ogar 350 type 12, year 1948 Jawa,ČZ 125 type 355 Kývačka since 1956