ダクタイル鋳鉄（各）

My old swing set hardware was squeaking so badly the neighbors could hear it. Swapped in these ductiles and the motion is smooth and quiet now, and I like that they're sold individually since I only needed two.

Bought these as replacements after one of our old pieces finally wore out, and they went on without any fuss. They do exactly what they're supposed to — the swing moves back and forth freely instead of grinding, which should cut down on the wear that killed the last one.

Our swings glide much more smoothly now with these ductiles, and the hardware feels sturdy. They're designed to reduce wear over time, which is exactly what our old set needed. Great value for the price.