Swing Swival Bolt Style Hangers 3/8" X 3-1/2" Snap Hook, Swingset, Set of 2 Comes with washer and Hex Nut on Each Hanger Zylan Coated for Use with Treated Lumber 3-1/2" Bolt Length for 2X4 Lumber No "S" Hooks Needed, Just Add Chain Can be Used on Wooden or Pipe Set, Excess Can Be Cut Off