Otis Technology Chamber Pro Brush .30 cal Black. Specifications for Otis Technology Chamber Pro Brush: Manufacturer: Otis Technology Length: 1 in Color: Black Fabric/Material: Phosphor Bronze Weight: 11 lb Pieces: 275 Gun Type: Universal Gun Make: Universal Depth/Thickness: 1 in Gun Model: Universal Features of Otis Technology Chamber Pro Brush Ideal for difficult to reach chambers the Otis Chamber Pro features a flexible cable to navigate into the chamber from the action. Features a tapered caliber specific phosphor bronze chamber brush and an ergonomic T-handle. Package Contents: Otis Technology Chamber Pro Brush What firearm models does the manufacturer say Otis Technology Chamber Pro Brush is compatible with? The manufacturer suggests that Otis Technology Chamber Pro Brush is compatible with UniversalOtis Technology IP-330-C-B: Chamber Pro Brush .30 cal Black