Features Compatible with all Break-Open Auto Pump and Bolt Action shotguns. Precision constructed from aircraft grade aluminum Delrin® and nickel-plated brass with a hard anodized finish. Sturdy telescoping rod adjusts from 27? to 40?. Precision quality spring loaded snap-cap handle contains an oil reservoir. Tooled directly in the rod is a paper towel grip for tighter cleaner swipes. No wasted money on loose fitting patches. Paper towel grip doubles as a chamber cleaning tool. Threaded to accommodate all universal 5/16 x 27 standard cleaning accessories.