Selling a very unusual and rare optical spot attachment
This is sold by both Dyna-lite and Comet and could be adapted to other brands.
It has no flash tube, rather a flash-head is attached to it.
The SR-OS is an optical spot attachment that works like a snoot but with more control and more options to choose from. It features a focusing condenser mechanism, detachable cooling fan, warehouse stop plates, gel holder and framing cutter.
One can precisely focus and cut extremely small or large and accurate light swaths.
Also, light can be shaped in a variety of angles and modified in many different ways.
It has had only light usage and is in great shape.
B&H currently sells it for 1400 + shippinghttp://www.bhphotovideo.com/c/product/91150-REG/Dynalite_SR_OS.html
Asking $950 + shipping at cost