It fits in there, but you have to press it firmly against the nano stem to get a good seal. It didn't work well for me, I could only get thin vapor, there wasn't enough suction for a good hit. I actually tried the same thing with the sticky brick last night, with similar results, the vapor was even thinner with the brick. I put the hopper with silicone tip up to the brick's heat intake. It might work better using the hole at the bottom of the mouthpiece block.