The Thompson Center U-View Flex Loader allows users a way to view the powder within. FeaturesCompact carrier is rugged and flexible and contains everything needed for 3 shots3 loading tubes can each hold a projectile and a chargeCarrier also holds four 209 shot shell primers and has a lanyard hole to attach to your bag or pouchSpecial silicone Bio-Flex material withstands frigid conditions while remaining pliableFor .50 or .45 caliber riflesAccepts magnum charges of 3 Pyrodex pellets with sabot