This is the large Nite Ize Figure 9 Carabiner in black with a black wire gate. It combines a carabiner clip with a Figure 9 rope tightener, so you can clip to a hook or ring and tension a line without tying knots. Wrap the rope through the prongs and pull tight; it holds until you unwrap it and lets you release a tight line in a controlled way. Use it for tarps, roof-rack loads, bundling gear or tethering a boat or canoe. The body is aluminium and, as marked on the carabiner, the large size has a load limit of 67.5 kg (150 lb) and fits rope from 3 mm to 9 mm. It can be used as a loop, fixed-end or anchor-clip system. Not for climbing. Supplied without rope.