Each day I receive many interesting questions and comments about police procedure, CSI, and forensics. I thought it would be fun to share my answers and experience on a Q&A blog.  I welcome your questions and comments.

Question: Do all cops use the same type of handcuffs?

The two main types of handcuffs used by law enforcement are pictured above. The top image is of a pair of chain-linked handcuffs. Most police officers prefer to carry and use chain-linked cuffs because the chain between the bracelets swivels, making the cuffs flexible and easier to apply to the wrists of combative suspects.

The lower image is of a pair of hinged cuffs. These are more commonly used when transporting prison or jail inmates. Hinged cuffs are not flexible (the hinge between the two bracelets does not swivel) which greatly reduces wrist and hand movement.  This type cuff is sometimes difficult to apply to the wrists during a scuffle.

Both style cuffs operate using a ratchet and pawl locking system. Both are equipped with a second lock (double-locking) to prevent any further tightening of the ratchet which can injure the wrists of the cuffed suspect.  The second lock also prevents prisoners from picking the lock.