Kareem Abdul-Jabbar’s collection of memorabilia from his Hall of Fame career fetched nearly $3 million at auction yesterday.

Abdul-Jabbar put nearly 250 lots of memorabilia — including four of his six NBA championship rings — for sale through Goldin Auctions, with much of the proceeds going to his Skyhook Foundation charity that helps kids learn about science, technology, engineering and math. Here’s Jabbar on why he’s selling everything off:

“When it comes to choosing between storing a championship ring or trophy in a room or providing kids with an opportunity to change their lives, the choice is pretty simple: Sell it all,”

The items sold for $2,947,872.25.