Sphinx Color:Black while larger sizes have holes

while larger sizes have holes that reduce weight

which would greatly reduce its strength

SLYDE is an ingenious adjuster for ropes that reduces impact forces

Full article is on Climbing Magazine's website

The rubber eye it is attached to

Sphinx Color:Black while larger sizes have holesA super compact, ultralight pulley with fixed side plates. The Sphinx is very easy to handle and convenient to carry on a harness while ski touring or mountaineering. The attachment hole is large enough to allow full rotation of a standard locking carabiner. Self lubricated brass bushings are perfect for light applications at low speed. Unlike other pulleys with fixed side plates, the Sphinx allows for a prusik knot to be installed on one side (aramid