The Bianchi 580 Speed Strips for the .38 Special and .357 Magnum are a perfect, slim back-up to speedloaders and a must for every revolver owner. The strips are designed for fumble proof cartridge loading so your focus can stay on the action around you. Fit compactly in most police-style cartridge boxes or trouser pockets for convenient carrying. Comes in a pack of two strips. Caliber: double action revolvers in .38/.357. Rounds per strip: 6.