WS-91 Surgical contra-angle with 1:2.7 speed increasing ratio. The contra-angle with 45-degree head combines the advantages of straight and contra-angle handpieces. The 45-degree orientation allows for considerably better access and visibility of the treatment site, especially during surgical extractions of wisdom teeth, precise tooth separations and apical resections. Triple spray guarantees sufficient cooling of the instrument and the surgical site. Works with surgical burs, drills, cutters with FG (Friction Grip) shank 1.6 mm and 25 mm length. Push-button chucking system. Can be dismantled for cleaning.