Three double-ended periosteal elevators are equipped with different working ends based on the variability of oral mucosa, and are designed to cover all kinds of flap elevations from delicate, tiny papilla to coarse palatal masticatory mucosa. The sharpness of the elevators and the ultimate flat, however stiff configuration, guarantee a minimally-traumatic flap mobilization. The blunt working ends with a groove are made to retract full thickness flaps and provide a stable seat on bony surfaces and crests.