Originally Posted by Anno_Domini
If you look closely, he grabs something that's a 'V' shape with six tiny ball-like shapes along that 'V' shape which then just dispersed when it was thrown.
I remember a comic were Batman used something like that
he used bolas :
For some reason, the image I tried to embed is not showing up, here is the link :
Terry McGinnis also used bolas :
BUT it could also be smoke pellets (there is a v-shaped thingy) :