Otis Technology Thin Blue Line Cleaning Kit .40 S&W Black. The 12ga Thin Blue Line Weapons Cleaning Kit Features The Necessities For A Quick Clean For Your Shotgun. Also Included Is A Special Edition Blue Ripcord Specifically Designed To Be Able To Clean A Hot Barrel On The Range. The Ripcord Offers Unrivaled One-pass Cleaning. This Convenient Tool Cleans From Breech-to-muzzle In One Quick And Easy Pass. Specifications for Otis Technology Thin Blue Line Cleaning Kit: Manufacturer: Otis Technology Caliber: .40 S&W Gun Type: Pistol Package Contents: Otis Technology Thin Blue Line Cleaning Kit