Rated Air-pressure :177-216Kpa(1.8-2.2kgf/cm2). Rotating Speed Without Load :400,000RPM. Needle change type: push button. Rotate speed without load:350000 r/min ø Rotate air pressure:108-245Kap. Noise level: =68 dB. Under normal circumstances bearing life: 5-10 months. Applicable Bur: 1.6mm and should be conformed to ISO standard. Durable fastidiously request for designation, technology and materials. The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies. You feedback is VERY important to us! Our USA Warehouse located in Gresham, Oregon, United States. We strive to exceed all your expectations and put a smile on your face. We stand behind our products and pride ourselves on OUTSTANDING customer service. 1:30pm —6:00pm. Please Refer to Beijing Time. FDA for Curing Light. 510(K) Number: K192233. Regulation Number: 21 CFR 872.6070. 510(K) Number: K181691. Regulation Number: 872.4200. Classification Product Code: EFB. Subsequent Product Code: EGS. 510(K) Number: K163414. Regulation Number: 872.4850.