This is the Horn Set for the HS-635HB High Torque Servo, HRCM1360.

FEATURES: Heavy duty hardened plastic construction

INCLUDES: 1.8" (44.9mm) Round Horn 2.3" (59mm) Double Arm 1.7" (43.9mm) Four Point Horn Mounting Hardware  

BOX DIMENSIONS: 2.25" W. X .50" H. X 2.88" L. BOX WEIGHT: .04 LBS.