It's fits almost all the ISO 518 hot shoe flashes, such as for Nikon, Canon, Nissin, , Sigma, Olympus, Metz etc. Works perfectly with shoe mount flashes and wireless strobe triggers. The 1/4 With a small hole on the flash hot shoe mount to allow the locking pin on bottom of the flash to lock in the flash stand. Compatible models (for reference only): for Canon 580EX II/580EX/430EX/380EX/220EX/550EX, Nikon -400/-600/-800/-900, Sigma EF-500/Z3, Pentax AF-360FGZ/AF-540FGZ/AF-220T/AF-500FTZ/Olympus FL-20/FL-36/FL-50, Panasonic DMW-FL28/DMW-FL360/DMW-FL500 Etc Material: Plastic Color: Black Size: Approx. 9.5 * 6.3 * 1.2 cm/3.74*2.48*0.47 inch Brand No Brand SKU 100282769_NP-1020545512