Brummel Hooks - Sister Clips Stainless Steel for 1/8 inch to 1/4 inch Cord. (Blackened Stainless Steel, 5 Pair Pack)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..