Zacuto ZipGear Prime Lens Kit with Stops has been discontinued, here are some related products you might like:
The Zacuto Z-ZG-PLK4S
Zacuto Universal ZipGear prime lens kit includes four 13.5" adjustable gears, four gear locking housings and four stop housings. This kit is perfect for four prime lenses. Just wrap the gear around the lens, cut to size, press on gear locking housing and tighten. Install stop housing to create a focus stop.
Installation takes one minute.
What is included
Four adjustable gear
Four locking housings
Four stop housings.
For more information about Zacuto Products click here to open up their website.