The Manfrotto 046 Expan Drive with plastic chain incorporates two expandable core units. One side has a large toothed gear to which a plastic chain affixes, permitting convenient raising and lowering of the background paper roll. The other side has an adjustable tension drag. The double core units are unique in that when the overall screw on which the drive unit is mounted is tightened the drive expands from a minimum of 46 to 78mm. To accommodate cored paper rolls in any length, all you do is insert the Expans at both ends, tighten up until they're snug and mount the entire assembly on your background holder hooks. Fits onto Autopoles or straight onto the wall.
Comes with: 3x geared units 5x non-geared units (2 spare) 2x Manfrotto 045 triple hooks 2x Manfrotto super clamps Adjustable plastic chain 2x weights
Gear is in great condition...the only minor is that one of the geared units has a broken cage - should not affect functioning.