Focusing unit for Canon EF 100-400mm F/4.5-5.6 L IS USM lens.

Genuine original Canon part, the barrel is used, it's in like new condition.

A brand new never used zoom band will be included in the sale.

The popular "zoom band" part (YA2-3642) is included in this parts unit.

The "Zoom Band " is the parts to lock zoom position. If the lens zoom is not smooth, or very loose. You will need the focusing barrel with "Zoom Band".