Radial wiper arms are typically used on windshields that are wider than they are tall — like runabouts and automobiles.
They sweep the blade in an arc.
All of these arms feature the familiar automotive J-Hook for blade attachment, except the 200723DS-PKG - which has a screw-secured, saddle attachment for the blade.
They also have a black Zamak metal socket which is designed for use with wiper motors that have brass pivot shafts.
All of these arms are "dry" — that is they have no integral washer spray head; however, easily installed spray head kits are sold as a separate accessory.
• Black finish is black powder-coated stainless steel