Aluminum construction, anodized blue in color.Three plastic adapters allow horn to be used with Futaba, JR, KO Propo, Airtronics/Sanwa, Hitec, Tower Hobbies and Hobbico brand servos. One large and one small diameter linkage holes.

Length: 1.0" (26.8mm) both arms
Thickness: 0.07" (1.9mm)