Standard 1/4 Screw thread, compatible with most photography equipments. By this magnetic base, Video lights can be attached to iron products conveniently for lighting.Video Lights can be attached through this base even in small room as lighting tool. Video lights can be attached near mirrors via this magnetic base to work as fill lights for make-up fr shows or during traveling.Compatible with the plastic mobile phone clamp to stabilize the mobile phone. With the plastic mobile phone clamp to stabilize the fill light.