Andoer Flash Stand AS-21 ISO 518 Hot Shoe for Nikon Canon Pentax The 1/4" tripod socket on this unit is convenient for you to install flash on a tripod. Fits almost all the ISO 518 hot shoe flashes, such as Nikon SB800, Canon 580EX/580EXII, Pentax, Olympus, Sigma, etc. In particular, this stand is built for the Nikon SB-900, SB-800, SB-600. Works perfect with shoe mount flashes and wireless strobe triggers. Note: this adapter don't fit for Sony Alpha and Minolta flashes.