CDI Stainless Roller Furling / Furler DrumThis is a CDI stainless steel drum The drum is 7" diameter. The torque tube is plastic measuring 12" in length. The mouth for the line is 3 3 4" wide x 5 1 2" long. This style of furling only stays together with the cable that runs through also been cut so this is just the drum! The extrusion type is the plastic. It measures 1 7 8" long x 1" wide. The bronze turnbuckle on the rigging side is 12" long. The toggle has a 1 2" pin and a 5 8" inside width.