The lens is gently used by a hobbyist, and in outstanding conditions. It comes with front and back covers, and the lens hood. Asking $595.
The Canon 24-105mm F4 L IS USM includes a ring-type ultrasonic motor which drives the autofocus actually quickly and in virtual silence. Full-time manual override is offered, making it possible to adjust focus without leaving AF mode.
It is a very versatile lens offering a continuous F4 aperture, 4.3 x zoom ratio, from wide angle to medium telephoto and weighing just 670g. It also consists of Canon's three-stop Image Stabilizer (IS), making it perfect for portable work. IS allows the use of shutter accelerate to three stops slower than typical, with no boost in image blur from cam shake.
This lens is well constructed, highly useful in all focal lengths and offers great optical quality. It achieves this with a mix of it USM, IS and accurate, sharp AF. It is unlikely you will certainly discover a more appropriate relatively priced general purpose lens.