Lifetime warranty. Called the best rifle capper in the world. Holds approximately 75 caps. Works with any caps. Works on rifles or shotguns. WILL NOT work on revolvers, but may work on some inline action rifles. Simple to operate, even with your gloves on. For loading instructions go to www.youtube.com and type in TDCMFG Measures 3-9/16" x 1-3/8" x 13/32". Hand engraved by Fred Bowen!