The Manfrotto Professional PCIe 3.0 Professional-Grade CFexpress™ Type B Memory Cards combine industrial strength and reliability with unparalleled performance. Designed to excel in pro DSLRs and advanced CSC cameras that require faster speeds for demanding shooting modes, the Professional CFexpress™ Type B cards are designed for Photographers and Videographers for use in the latest hosts. Pro Performance: Manfrotto Professional CFexpress™ Memory Cards are designed to be some of the highest quality cards around- Able to record 8K, 6K, and 4K video at high frame rates with incredible speeds: Download speeds up to 1730MB/s and capture speeds up to 1540MB/s, with a PCIe 3.0 Interface. Built for Extreme Temperatures: Whether you’re shooting in desert heat, the sub-zero arctic, or you leave your memory card in a hot car, you can shoot with the assurance that Manfrotto Professional Memory Cards are built to withstand these temperature variations. CFexpress™ cards are rated for temperature ranges from -25°C to 70°C.