American made 19 arm for JK Hawk 6 motors. Wound on the Koford Tri Star blank for performance and cool operation. A 19 arm is the same as a 20 arm but wound on a .350 long stack to fit the hawk motor. The arm uses Koford 800* Epoxy for the ultimate in durability. Plated super hard shafts (harder than drill blank) to nearly eliminate shaft wear. Plating provides the ultimate in solderability (prevents spinning pinions), lowest friction and no rust.