Handheld explosive the size of a golf ball.
Explodes on impact, not fuse based.
Can throw unaided up to 20 feet.
With some sort of launcher up to 60 feet.
2d4 fire damage in a 5-ft radius of where it lands.
Anyone in that radius gets to make a DEX SAVE DC 12 to only take half damage.
They are BLINDED for 1 round if they fail in addition to taking the damage!
This is obviously a single use/disposable weapon.
Closest real world way to imagine this is as a cherry bomb.
Average cost is 4 silver. May vary depending on where sold.
NOTE that these have a tendency to go off unexpectedly if they are on someone's person and that person is hit with fire while in combat.