Nerf Soaker Dunk-Fill Water Blaster 2 Pack. Double the fun with the Nerf Super Soaker Dunk-Fill 2-Pack. These water blasters feature innovative instant-fill tanksjust dunk them in water and youre ready to blast. Each translucent tank holds up to 10.1 fluid ounces (300 ml) and lets you watch as it fills super fast. Pump the handle to unleash powerful streams of water, well suited to backyard battles and outdoor soaking fun.