The patented RopeGrabber does exactly what the name implies: It helps you to grab thin ropes so you can easily pull them. Nothing less, nothing more. It has no movable parts, nothing that can break. Its smoothly rounded edges allow you to tension your longline without any pain on your hands. It's the perfect lightweight replacement for a heavy ascender. RopeGrabber works best with ropes of a diameter from 4 mm to 8 mm.