Autotex DIN Radial 12x4 Hook Wiper ArmThe Autotex DIN Radial 12x4 Hook Wiper Arm is a heavy duty commercial wiper arm built for DIN tapered pivot shafts. Featuring a 12x4 hook blade connection, it is available in dry and wet (integrated washer) configurations across multiple lengths from 21. 5" to 29. 5". Suitable for buses, RVs, motorcoaches, and specialty commercial vehicles. Features & Benefits: Fits DIN tapered C12 M8 pivot shafts 12x4 hook blade connection Available in Dry (external