We promise the products we sell are quality productsWish you have a pleasant shopping experienceProduct Detail:Description:Voltage: 6VMaterial: MetalModel: N20Revolving Speed: 30RPMTotal Length: 36mmMotor Size: 12mm(diameter)*26mm(height)Shaft Size: 3mm(diameter)*10mm(length)Package Included:1pc Model N20 DC 6V 30RPM Mini Metal Gear Motor with Gearwheel 3mm Shaft DiameterGA12-N20 Mini DC 6V 30RPM Gear Motor