SPECS: Weight: 200 g Compatibility: 8.5 mm to 11 mm single rope (optimized for 8.9 mm to 10.5 mm) DESIGN & DETAILS: Durable aluminum plates on sides, stainless steel friction plate, cam and wear plate with reinforced nylon handle Use standard belay techniques for feeding slack and catching falls Cam-assisted blocking for easier belaying and leeway on brake-side hand position Installation diagram for rope engraved on device interior and exterior Ergonomic handle for easily unblocking rope and lowering someone Controllable, progressive rope feed for improved descent 3 to 1 mechanical advantage to help control small-diameter rope feed and reduce effort for large-diameter ropes Lockable knob to select belay mode or top-rope for a more comfortable belay Anti-panic function on handle when pulled too hard Certified under CE EN 15151-1 and UIAA