... natural rubber 4)Trade Report Audited by BV,download free! Universal wiper bladeFeatures:1)Size : 21", Model : 525mm2)Size : 22 ... other Wiper bladesSpecific conventional, soft wiper bladeUniversal soft, Specific soft, Universal conventional, Appendix serieAbout size: 5", 14", 15", 16", 17", ... 18", 19", 20", 21", 22", 23", 24", 26", 28", 32", 36", 40" ...