4 functions: Drilling/impact drilling/chiseling with/without lockOverload safety stop for extra user safetyOne position switch for all functionsLarge soft grip surfaces for pleasant workingEnclosed handle design to protect the palms of the handsContinous operation lock for pleasant user-friendly workingPneumatic impact mechanism for very good forward tractionRugged SDS-plus chuck with automatic slip-in-functionSpeed electronics for material and application suitable workingInfinitely adjustable drilling depth stop made of solid metalSupplied in practical transport and storage case