Rothco's Thin Blue Line Paracord Keychain With Carabiner is the perfect way to show your support for the police and law enforcement officials. Thin Blue Line keychain is 9 cm in length and 1.4 meters when unraveled and also features a 60 MM black carabiner on one end and a metal split ring on the other. Proceeds From This Purchase Benefit Families Of Fallen First Responders.