Petzl Minder Pulley adjustable As you can probably guess

As you can probably guess from its name

Integrated attachment points allow the addition of compatible shoulder straps for improved weight distribution and increased comfort when carrying equipment

They can be rigged in all the standard methods for mechanical prussiks

avoiding torsion and side loads

short legs

Petzl Minder Pulley adjustable As you can probably guessMINDER High strength, very high efficiency Prusik pulley MINDER is a high strength pulley designed for rescue professionals to set up progress capture systems. Description Special side plates designed for use with a Prusik friction hitch in progress capture systems Large diameter sheave mounted on sealed ball bearings for excellent efficiency Accepts up to three carabiners to facilitate use Specifications Rope compatibility: 7 to 13 mm Sheave