Now available from Zak Tool, the Handcuff Helper prevents small wrists from slipping through fully closed handcuffs. Easy to install and impossible to remove while the cuff is closed on a wrist, the Handcuff helper is designed for use on Peerless and Smith ' Wesson handcuffs. It provides the ultimate security against cuff slipping while reducing wrist injury from abrasion caused by contact with the handcuff locking arm.