WS-91 L LED+ 1:2.7 speed increasing contra angle with 45 degree head specifically for improved access to premolar and molar areas. Equipped with LED+ daylight quality light providing optimal illumination at all stages of the work. Works with surgical burs, drills, cutters with FG (Friction Grip) shank 1.6 mm diameter and 25 mm length. Triple Spray. Can be dismantled for cleaning.