The Shadows Edge 99005 Webcaster Refill Sticks, 20 Count, Black 20 webbing refill sticks for creating spooky cobwebs Best when used with Webcaster Gun and 90 psi air compressor Covers approximately 350 square feet or a 12-by-15-Feet room Glows in the dark with a black light; easy to cleanup Measures approximately 1 by 1 by 4-Inch each