Bianchi Model 585 Speed Strip Dozen Pack Speedloaders, Loads .38/.357 Revolvers, Urethane, Black 20056 Bianchi Speed Strips are a compact loading device for revolvers. Made from a flexible urethane material" these strips securely hold 6 rounds of revolver ammunition and conveniently load two rounds at a time. Speed Strips fit in most single mag/knife pouches and in a trouser or shirt pocket and are offered in two sizes.