6308 zz c3 * 50 6213 zz c3 * 50 6307 zz c3 * 50 3307 Steel cage * 50 6310 zz c3 * 50 740/742 * 50 1208 ck c3 * 50 22217 ek * 20 6309 zz c3 * 20 skf