What type of cutting device is typically used by teens for self mutilation/cutting?

Availability. Unfortunately, teens (and adults) in these circumstances will use whatever they find, or think is convenient. If you know of someone who is either contemplating, or actually cutting, it is important that they get the help they need from a mental health professional. Don't be afraid to speak to a friend, parent, teacher or other confidant so that individual can get the help they need.
Cutting. Many different things are used to cut, pick, and self mutillate. Is this going on with you or someone you know? Meds and therapy together are your best bet. Get a psychiatric evaluation for what ails you, and what cutting means to you as well as anything else that may be going on. Then get a referral to a reputable psychotherapist to help with the emotional issues behind cutting. Do it today.