i used a metal rod and taped it against the metal of a playground swing. the pipe On the swing was hallow that created this sound.
金屬碰撞
聲道：2
類型：wav
pitched、stump、high、metallic、OWI、metal、object、tap、Eco、hit、load、impact
傾斜的、樹墩、高、金屬的、OWI、金屬、目的、龍頭、生態、擊中、加載、碰撞
資料來源：freesound ( https://freesound.org )