With our clips there is no need to tie knots in your cord due to the patented threading technology. Stainless steel sister clips offer a lightweight and quick means of attaching and detaching lines. Popular on spinnaker sheets, dinghy covers, or flag halyards. Effective means of quickly attaching and detaching ropes. Sister clips are a simple, effective means of quickly attaching and detaching ropes. Other uses include key chains, camping, hunting, fishing hiking, backpacking gear. Great to hang water bottles from packs.