These are used mostly for the 1/10th and the 1/8th gas cars and trucks for the throttle. Can be used for the steering. FEATURES: -plastic construction, red in color -spline drive YOU WILL RECEIVE: -(2) servo arms SPECIFICATIONS: -T-shaped, one leg measures 1 1/2 long and the other measures 9/16 -Fits Hitec, Tower and Hobbico servos. NNA-10/25/94