Dual-action, cleaning system for 12 gauge shotguns features an ultra absorbent bore mop and a crud-scrubbing bore brush that screw together so you can put them through the bore in one step. "Double-them up" in the order you prefer or even add another mop or brush for even more throrough cleaning.
SPECS:
Fits 12 ga. Shotgun. System includes one Brush (Bronze or Nylon) and one Mop. Bronze brush - Bristles, Phosphor bronze, wound-steel shank, aluminum coupling, 5/16" - 27 thread. Nylon brush - Bristles, Nylon, wound-steel shank, aluminum coupling, 5/16" - 27 thread. Mop - Wound cotton, twisted steel shank, aluminum coupling, 5/16"- 27 Thread.
Catalog page 302