ITEM NAME:DC 1.5-6V 18700RPM 20mm Diameter Massager Vibration Micro-Motor R140 H2S1 DC 1.5-6V 18700RPM 20mm Diameter Massager Vibration Micro-Motor R140 H2S1 Recommended operating voltage range DC 1.5V to 6V, metal body, 6 layers eccentric weight. Great replacement Vibration Micro-Motor for your broken one. Material: Metal, Plastic Model: R140 Color: Silver Voltage: DC 1.5-6V Speed: 18700RPM Vibration Head Size: 17*10*5.6 mm /0.66inch x 0.39inch x 0.22inch (L*W*T) Shaft Size: 2 x 7.5mm / 0.08inch x 0.3inch (D*L) Main Body Size: 20 x 25mm / 0.8inch x 1inch (D*H) Net Weight: 23g Package Content: 1 x Vibration Micro-Motor Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Speed: 18700RPM. Model: R140.