Alpen multipurpose cylindrical 5-piece drill bit case - Application: high flexibility and precise drilling, even if the drill bits are changed in different materials. For rotary drilling in pavements, masonry, metal, wood and plastic. -Main characteristics: - Multipurpose. -Hard metal plate, very sharp edges, therefore also very suitable for metals. -Patented quadruple stepped profile, Quick removal of debris during drilling in masonry and concrete.