Rescue Pulley ice climbing it's all in the name:

it's all in the name: there is an extra aramid sheath between the polyamide outer sheath and core to protect the rope better from sharp crag and metal edges

the innovative design makes it easy to move between climbing routes

More About Rig Plates:

Load-bearing construction made from ultralight

For efficient movement within the tree:

Rescue Pulley ice climbing it's all in the name:The Rescue pulley is very strong and efficient: ideal for rescue, hauling heavy loads and intensive use. Features Designed to maneuver heavy loads or for intensive use Large diameter sheaves mounted on sealed ball bearings for excellent efficiency Accepts up to three carabiners to facilitate use