The KST DS725MG is a high quality digital servo, fitted with metal gears for strength and reliability. And it is high-voltage so that it can reduce the current, thus, it can bring your manipulation more exquisite. This specifications are very impressive, masses of torque, excellent speed, perfect for 550 RC helicopter airplane.<br><br>Features:<br>Large stall torgue of 18.0Kg.<br>All metal case by CNC.<br>Included 2 ball bearing.<br>With 17mm coreless motor.<br>High precision metal gear.<br>Small size and light weight.<br>With 4 sets of servo horns and fittings.<br>High quality, ideal choice for 550 helicopter airplane.<br><br>Specifications:<br>Brand: KST<br>Item name: DS725MG<br>Material: Metal<br>Signal: Digital<br>Connector wire: About 325mm<br>Operating voltage: DC 6.0-8.4V<br>Operating speed: 0.09 sec / 60&deg; @ 6.0V; 0.08 sec / 60&deg; @ 7.4V; 0.07 sec / 60&deg; @ 8.4V<br>Stall torque: 13kg.cm @ 6.0V; 16kg.cm @ 7.4V; 18kg.cm @ 8.4V<br>Working frequency: 1520us/333Hz, 900us-2100us<br>Motor type: Φ17mm coreless motor<br>Bearing type: 2BB<br>Item size: 40.5 * 37.0 * 20mm<br>Item weight: 70g (wires included)<br><br>Package Information:<br>Package size: 7.8 * 6 * 3.8cm / 3.1 * 2.4 * 1.5in<br>Package weight: 128g / 4.5oz<br>Brand gift box package<br><br>Package List:<br>1 * KST DS725MG Servo<br>4 * Servo Horns and Fittings