Cheerwing&reg; 4x Emax ES08MAII 12g/1.6kg/0.12sec Metal Gear Mini Analog Servo Upgrade ES08MA 12g/ 1.8kg Mini Metal Gear High-Speed Servo, ES08MA Upgrade Version Size: 23 x 11.5 x 24 mm (0.9 x 0.45 x 0.94in) Operating speed (no load): 0.12sec/60 @ 4.8V; 0.10sec/60 @ 6V Stall torque: 1.6 kg.cm / 21.0 oz.in @ 4.8V, 2.0 kg.cm / 28.0 oz.in @ 4.8V Package: 4 pcs x ES08MAII Servo