Calumet MF6730 Speedbox Adapter Kit, Includes A Speed Light Adapter, An Adjustable-Angle Umbrella Mount And A Telescoping Arm. Expand the lighting possibilities of your Calumet SpeedBox with this versatile adapter kit. This kit includes a basic speed light adapter, an adjustable-angle umbrella mount and a telescoping arm. The basic speed light adapter will accept most popular shoe-mount flash units. The circular ring and vertical upright can be removed when using the umbrella mount and an umbrella (not included). The umbrella mount offers angle adjustments forward and backward up to 180 (degrees). It also features a 5/8 mount that allows you to attach it to most light stands.