1. Tractor wiper blade 2. Teflon coating rubber blade 3. Heavy duty design 4. Casteels tractor wiper blade WIPER SYSTEM EXPERTKM05 HEAVY DUTY WIPER BLADE( tractor wiper blade ) 1.Teflon Coating ... manufacturer in China, with over 30years' experience in making wiper blade, wiper refill, wiper arm, linkage, wiper motor, washer tank, washer nozzle and washer pump ...