https://www.polygon.com/2018/4/24/17275108/fortnite-patch-clingers-sticky-grenades-returns

Fortnite’s latest patch (version 3.6) brings sticky grenades, called “clingers,” to both Battle Royale and Save the World modes. The way they work is pretty simple: You throw them, they stick to enemies or structures and then blow up after 2.5 seconds. Easy, right?

Here are the stats for the new weapon, from the patch notes: