Heavy Duty Metal Gears Servo (01102376-3), S3305 replacement (01102253-3).NO DRY BATTERY USENO SBUSDO NOT LEAVE SERVO STALLED, Stall may cause printed circuit board to burnSpecifications:SPEED: 0.18 sec/60deg at 6.0VSPEED: 0.23 sec/60deg at 4.8VTORQUE: 8.9 kgf/cm at 6.0V, 123.6 ozf/in at 6.0VTORQUE: 7.1 kgf/cm at 4.8V, 98.6 ozf/in at 4.8VSIZE:40 mm x 20 mm x 38.1 mm (1.57 in x 0.79 in x 1.50 in)WEIGHT: 46.5 g (1.64 oz)