While designed for lifting loads, crevasse rescue operations, or as an emergency ascender, this ultra-light pulley with backstop (PCB) that can be fixed in the open position. It's suitable for ropes with a diameter of 7.0 to 11.0 mm as well as the EDELRID Rap Line (6 mm). It uses ball bearing pulleys for high efficiency (92%) and simple cam operation even with gloves utilizing tether.
SPOC Rope Grab Pulley Product Information Sheet
Rollclip A Pulley-Carabiner-Non-Locking
Mini Machined Pulley