Writing Medium:non-porous surfaces Ink Color:Colored Ink Type:Dry-Erase & Wet-Erase Products Name:Alibaba express new product colored chalk markers set Color:Red, white, green, yellow, orange, blue, pink, purple Nib:4mm, 6mm, 8mm, 10mm, 15mm Package:5pcs, 6pcs, 8pcs/box Warranty:6 months OEM:serviced Customize:yes Certification:EN71-3 and ASTM4236 Sample:accepted Show More