Cavechat.org

Tried out the Sqwurel (4.6 oz weight) on both 11mm PMI Pit rope and 6mm Mammut rappel cord. Found it gave sufficient friction on the 11mm rope without twisting the rope using the so-called Jumbo mode (shown below with white rope) and sufficient friction on the 6mm rope using the so-called Behemoth mode (shown below with skinny yellow rope). A possible alternative to carrying a heavy rack, on shorter drops. YMMV.