Cardi B’s microphone, which she accidentally transformed into a weapon during her recent Las Vegas performance, is now being put up for sale, and it’s all for a good cause.

The microphone that Cardi threw into the crowd at Drai’s Nightclub really belonged to a Sin City audio production company called The Wave, and the owner said he chose to auction it off to support a few charities.

Scott Fisher said the white tape across the bottom of the microphone says “MAIN,” and despite Cardi tossing it into the audience, it still functions, it was rather simple to locate the mic after the performance. According to Scott, his business offers audio support to the majority of the larger clubs in Vegas, including Drai’s.

It will be fascinating to see where the winning price falls given that the eBay listing’s starting bid is $500 and Scott claims the microphone previously cost $1,000.

The Wounded Warrior Project and a local charity called Friendship Circle Las Vegas, which helps teens and young people with special needs, will each receive a portion of the sale earnings, according to Scott.

Read more at Complex.com