ASP Handcuff Keys are precisely machined for a universal fit, then heat treated for strength. The BackSet tab facilitates rapid location of the keyway. ASP Blue Line products pay tribute to the critical role that law enforcement plays in protecting citizens in our society. The police are said to be the "thin blue line" that protects the public and maintains order. Sell Sheet (pdf) ASP Training Room - Handcuff Keys https://youtu.be/cXcp0-vlnsI ASP Quick Look - Blue Line Collection https://youtu.be/ng45IGRkCE4