The Classic Way For Aspiring Artists To Create Millions Of Amazing Designs Now In Neon! Draw Bold Spirograph Designs In Bright Neon Colors With Vibrant Wheels To Match! Use On It’S Own Or Mix And Match With Other Spirograph Design Pieces For Even More Design Possibilities. The Precision Engineered Spirograph Gears Work With The Three Design Pens Included In The Set As Well As With Most Standard Pens, Markers, And Pencils.