The derma roller Helps beard growth, apply to Beard, hair, face, hand beard, hair Beard, hair, face, hand . Each microneedling roller comes with a storage case that keeps the roller clean. The unique derma roller is a great gift for your family and friends. Color: Black Blade Material: Titanium Batteries Required: No Packing: 3 different face rollers( model 0.3#/0.5#/1#)