ITEM NAME:1PCS 28BYJ-48 DC 5V Valve Gear Stepper Motor 4 Phase Step Moto@ Description Diameter: 27mm. Voltage: 5V. Step angle: 5.625 x 1/64. Reduction ratio: 1/64. 5 lines cable 4 phase stepper motor can be driven by ULN2003 chip. It also can be connected as 2 phase to use Original box: No Color: Silver Item size: 31*27*19mm Net weight: 35g Package includes: 1PCS 28BYJ-48 DC 5V Valve Gear Stepper Motor 4 Phase Step Motor.5 lines cable 4 phase stepper motor can be driven by ULN2003 chip. It also can be connected as 2 phase to use. Step angle: 5.625 x 1/64. Color: Silver.