Here's what other sites are saying:
The redesigned Petzl Rescucender Rope Grab installs quickly on a rope and is easy to use. The openable, cam-loaded rope clamp is built for use in haul systems as a tractor or progress-capture device.
The Petzl Microcender is a cam-loaded rope clamp is perfect for progress capture usage, especially in ascending or in haul systems.
Fit the extra-small Microcender ascender from Petzl into a shirt pocket and take it with you. Weighing only 5.5 ounces and able to accommodate a rope up to 1/2, its strength actually exceeds that of most other ascenders, despite its small size.
- Mountain Gear
The MICROCENDER Rope clamp/grab a smaller version with the exact same features as the Rescucender.