What is high speed ABS+ Filament? Based on regular ABS, cracking and warping has been significantly improved. It has high strength, better toughness, heat resistance. Designed for High Speed Printing. Acetone polishing is available, which can keep smooth surface of printed models.12 Available Color:Natural, Black, Cold White, Fire Engine Red, Green, Grey, Orange, Red, Silver, Blue, White, YellowRecommended Printing Parameters: Printing Temperature: 230-270? (Recommended Temperature 240?) Bed Temperature: 100-110°C Fan Speed: 0% Printing Speed: 50-300mm/s Recommended Heated Build Platform: High Temperature Tape, PVP Solid GluePlease Notice:1. The picture shown is a representation of the item, color may vary slightly due to the color setting of each individual monitor. 2. Warning:This Filament (when used in the operation of 3D Printers or 3D Pens ) can expose you and others in the same room to styrene, a chemical known to the State of California to cause cancer. Check on www.P65Warnings.ca.gov.3.High speed ABS+ have a relatively high shrinkage rate, so please remain heat preservation. Recommend to print in a enclosed condition.4. The cooling of high speed ABS+ is slightly poor. When printing, please set low fan speed or you can reduce the hanging angle structure of the STL file.Or you can try to decrease the printing speed.