Mystery part inside my new Impulse 31 V2?

[Tharr62]

What is this for?

cpj58ldeofcxjz26g.jpg

[Doby]

Pretty sure that goes over the threaded bolt on the battery tray to protect your LiPos from chafing, thats what I used it for on mine.

[G-UNIT]

Thats what its for.

[Tharr62]

Thanks so much guys!