AFI Deluxe Adjustable Stainless Steel Wiper Arm AFI Deluxe Wiper Arms are ideal for use with standard and heavy duty wiper motors. This Deluxe Wiper Arm has a complete stainless steel construction, and features an articulatingbend-back feature. The motor shaft mounting has additional set screw clamping. This is a dry wiper arm. Features Stainless Steel ArticulaingBend-Back Feature Lengths Available Adjustable 10-14 14-20 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.