... , cartridge with folderModel: N-TU2 Big head push-button type high-speed handpiece1. Powerful drive. Durable, ... mmnoise≤70 dBrotation speed300000-350000 rpmdescriptionbig head,push-button type,three water spray,cartridge with folderDear ... for full refund to be issued.5. No refund will be issued if the product ... packaging, everything must be in new condition, No missing parts. 6. Our guarantee does not ...