This is a universal filament spool holder for your Airwolf HD 3D printer. It accepts filament spools with a minimum 35mm center hole and a maximum 202mm diameter. Mounts directly to your printer using the existing holes and hardware. Use the provided MatterControl configuration file to print using ABS. We recommend using purple glue stick right on the glass. Apply glue stick to cold glass. Print will release easily when glass cools and glue residue will wipe off cool glass with water.