Bianchi Speed Strip, 580, Speed Strips, 6Rd, Black, .44/.45 Cal, Black 20058 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.