Spoc - Blocking Pulley - Edelrid
The new Spoc is an ultralight directional pulley. It features a high quality pulley with a retractable toothed cam. The cam is designed to allow the rope to easily and efficiently travel through the device in one direction but not the other.

More info
Spoc Blocking Pulley - Edelrid
The Spoc is made from two aluminum housing plates that sandwich a pulley made of aluminum bearings and sheave. The spring-loaded toothed cam is made of steel while the top spacer which houses the cam lock-out is made of plastic.
Weight | 61g |
Pulley Diameter | 20mm |
Efficiency | 92% |
Min Rope Diameter* | 7mm |
Max Rope Diameter | 11mm |
Max Capacity | 15kN |
Max Progress Capture Load** | 4kN |