I needed a thin nozzle for my shop vacuum to get into tight spaces. Fits on a Porter Cable Shop Vac. Airflow on original version isn't great, but it gets the job done if you need to get into very tight spaces. Wider version has much better suction, with the tradeoff that it can't get into as many tight spots. Fusion 360 f3d file included so you modify it to fit other shop vac hoses, or to change nozzle size.