This is a Hitec Digital, High Speed, High Resolution, Metal Gear Programmable Servo. FEATURES: Coreless motor Ideal for high performance aircraft to 1/4 scale, .30 and larger helicopters, and steering and throttle for 1/10 and 1/8 scale vehicles Gold plated contacts Metal gears Dual ball bearings High speed Water and dust resistant INCLUDES: Digital high speed servo with 12" wire and universal connector 2" servo arm Heavy duty 1-1/2" servo arm Heavy duty 2-3/4" servo arm Black disc servo horn Four 2 x 14mm mounting screws Four brass eyelets Four black rubber vibration isolators Plastic case and programming instruction sheet Hitec decals REQUIRES: Radio system SPECS: Speed: 0.16 sec/60 degrees at 4.8V 0.13 sec/60 degrees at 6.0V Torque: 144.42 oz-in at 4.8V (10.4 kg-cm) 172.20 oz-in at 6.0V (12.4kg-cm) Length: 1.57" (40mm) Width: 0.78" (20mm) Height: 1.45" (37mm) Weight: 2.18oz (62g) COMMENTS: A note on coreless motors-a conventional servo motor has a steel core armature wrapped with wire that spins inside the magnets. In a Coreless design, the armature uses a wire mesh that forms a cup that spins around the outside of the magnet. This arrangement is much lighter resulting in smoother operation and faster response time. cnh 7/8/08 ir/jxs