Manfrotto 044 B/P Clamps for use on Autopoles. A set of two background paper holders that can hold three Manfrotto 046 Expan drive units. The Triple Hook can either be fixed to a wall with the supplied studs and screws or to an Autopole or similar support via the included the 035 Super Clamps. New Black Steel Package Weight: 3.22 kilograms Package Dimensions: 9.6 L x 34.4 H x 22.8 W (centimeters)