Body-specific derma roller

A derma roller apparatus comprising:

• a head comprising:
• a cylindrical member having a width in a range of four inches to twelve inches, and
• a plurality of needles situated around the cylindrical member, each of the plurality of needles having a length of at least five tenths millimeters;
• a swivel;
• a connector that connects to a first endpoint of the head and a second endpoint of the head;
• a telescopic handle operably attached to the connector via the swivel, the telescopic handle being configured to move along a yaw axis relative to the head via the swivel, the yaw axis being perpendicular to a collinear plane that is collinear with the head and the handle, the first endpoint and the second endpoint of the head being transverse to the collinear plane;
• one or more stoppers that restrict movement of the handle within a predetermined angular range along the yaw axis;
• and
• a housing that encloses the swivel, the housing having a left wall and a right wall that are the one or more stoppers.