Every feature of Y1BA4 handpieces is precision engineered to deliver enhanced performance with the reliability and durability users expect. The cost versus performance ratio puts the Y1BA series at the highest level within its class. Clean Head System. Push Button Chuck. Speed: 380,000480,000 min-1. Head Size: ø10.3 x H13.5 mm. The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies. IMPORTANT INFORMATION ON OUR POLICY AND FEEDBACK. Feedback if you are satisfied with our items. We try to be fair and accurate with all of our product listings and descriptions. If there is a problem, we can work together to resolve it. We strive to always be extremely fair and always try to work with reasonable customers. We will always make every attempt possible to resolve issues if we made a mistake. Please do not assume a mistake is intentional. Let us know if our service could be better! Tracking info of your parcel is available. The following form is for your reference. Please repack the item carefully. City, State:BEIJING, China.