This is a Hoppe's Bore Cleaner known as the BoreSnake, model 24002D.
The BoreSnake is the fastest bore cleaner on the planet. One pass loosens large particles" scrubs out the remaining residue with a bronze brush" then swabs it all spotless with a cleaning area 160x larger than a standard patch.
Features:
Extremely Packable
One-Piece Design with T-Handle
