15 colors X PLA 50g / 1.75mm filament for 3d printing pen 3d drawing pen 750g Buy at: ... - goo.gl/aFuv7z i2.wp.com/www.b3dgeable.com/wp-content/uploads/2015/03/mKlgz2WieFdSM-1tnWKTsXg5.jpg?resize=176%2C225