 These types of handcuffs are known as "speedcuffs" or "quickcuffs", as the rigid bar design allows the officer to easily control the suspect and a much quicker placement on the wrist of the offender.Rigid handcuffs are most popular in the UK.Some officer supplement their standard handcuffs with disposable restraints ('zip ties'), such as the ASP Tri-Fold (TM) restraints, which can be carried in a pocket or in a specialized pouch on the belt.