Methamphetamine is a strong central nervous system (CNS) stimulant that is mainly used as a recreational drug. Popularly seen on Breaking Bad, Walter White cooks Crystal Meth. Methamphetamine properly refers to a specific chemical, the racemic free base, which is an equal parts mixture of levomethamphetamine and dextromethamphetamine in their pure amine forms. Dextromethamphetamine is a stronger CNS stimulant than levomethamphetamine; however, both enantiomers are neurotoxic and addictive.
Charm is 2 inches long
Chain is about 19 inches.