302 series with big torque head. 303 series with standard head.Head size: 12.513.02mm (302 series big torque head). Speed: 300,000-380,000rpm (302 series big torque head). This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Handpieces & Instruments\Dental Handpieces". The seller is "july-dent2021" and is located in this country: CN. This item can be shipped worldwide.