The A6620 is the Proma solution to reliable dental delivery units with mobility. Standard features include 2 automatic handpiece controls with the Proma pinch-valve block system. 2 straight smooth handpiece tubings with fittings. Self-contained patient water system with quick connect, water flush system for handpieces and air/water syringe with quick-change tip. Cart is sturdy on rolling casters. The Proma A6620 comes with a work surface 19" x 22" in Winter White laminate. Gibraltar is an upgrade.