There are times when a D shackle is too small and you want something safer than an S hook. That’s the time when an H Shackle Swing Seat Connector is the perfect fit. The H Shackle gets its name from its disproportionate “H” shape. The shape is what allows the H Shackle to connect thicker chains to swing seats. The double D shackle configuration provides a more secure connection with the chain that a standard S hook lacks. An S hook needs to be regularly checked for closure. An H Shackle eliminates that need with a quick tightening of the bolt and you’re swing ready. Constructed from galvanized metal, the H Shackle will endure the friction from swinging even in harsh rains for years to come. Such a simple part can make a big difference in the safety of a swing set.