Uxcell DC3V-4.5V 18000RPM Cylindrical Electrical Micro Vibration Motor, 2pcs Country of Manufacture: CHINA; Material: Metal; Net Weight: 53g Package Content: 2 x DC Vibration Motor; Brand: Assisi Main Color: Silver Tone; Vibration Size: 11 x 7mm/0.43" x 0.28"(DT) Speed(no load): 18000RPM; Rated Voltage: DC 3-4.5V Body Size: 25x20x15mm/1" x 0.8" x 0.6"(LWH); Total Length: 39mm/1.5"