Strengthen your swing connections with the Standard 5/16' x 3' S-Hook. A classic of swing hardware, these are sure to slip fairly easily through the chain and seat to create a secure connection. Close them with the S-Hook pliers for maximum safety. S-Hooks require more attention that more common shackles, however, certain pieces such as the 5' Soft Grip Chaincan only be used with them.
For a larger or smaller S-Hook, check out theLarge End 3/8' x 4' S-Hook, Standard 3/8' x 3' S-Hook, and Large End 5/16' x 4' S-Hook.