Dental Color High and Low Speed Handpiece Kit 2/4 Holes BlackDental Color High and Low Speed Handpiece Kit 2 4 Holes Black. High speed handpiece is standard push button type and single way water spray. Low speed kit is E type connector, external water spray and latch contra angle. Precise technology, Steady, no vibration while revolving, offering a steady operation. Graceful body, simple, easy control. Low Speed Kits Features External water spray ISO E TYPE Connect 135C Autoclavable 4 2Hole Air motor High Speed