303 series with standard head. Head size: 12.513.02mm (302 series big torque head). 10.812.1mm (303 series standard head).Speed: 300,000-380,000rpm (302 series big torque head). 300,000-450,000rpm (303 series standard head). This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Handpieces & Instruments\Dental Handpieces". The seller is "august-dent20210" and is located in this country: CN. This item can be shipped worldwide.