"These opaque felt tip markers can write on a variety of surfaces including plastic, metal, wood, glass, plaster, canvas and more. Paint can be scraped off from nonporous surfaces like glass, etc. but will adhere permanently to porous surfaces such as wood, paper, etc. Water-based pigment ink is non-toxic, lightfast and waterproof. The ink won't bleed through paper (unlike alcohol-based markers) and is excellent for vibrant signs and craft work. It is a water-based pigment ink that is non-toxic, lightfast, and waterproof. Set includes: red, orange, yellow, pale green, green, light blue, blue, purple, pink, brown, white, and black. Unlike alcohol-based marker ink, the ink does not bleed. Country of origin : Japan Date First Available: July 2, 2016 Unit Count: 12.0 Count Number of Pieces: 12 Tip Type: fine point Recommended Uses For Product: Glass,Light Size: 12 Count (Pack of 1) Included Components: 12 Uni-posca Paint Marker Pens (Red, Orange, Yellow, Pale Green, Green, Light Blue, Blue, Purple, Pink, Brown, White, Black) Global Trade Identification Number: 04902778654088 ASIN: B001VB4T86 Material Type: Polycarbonate Product Dimensions: 7.3 x 0.9 x 4.8 inches Is Discontinued By Manufacturer: No Point Type: Fine Ink Color: Assorted Ink Base: Water Item Height: 4.8 inches Target Audience: Adult, College Students, Kid, Parents, Young Adult Manufacturer: Uni Style: Pen Number of Items: 1 Marker Type: Paint Marker Special Feature: Assorted Colors Pattern: Solid Manufacturer recommended age: 18 years and up Body Shape: Pen Color: Assorted Item model number: PC-1M12C Manufacturer Part Number: PC-1M12C Hand Orientation: Ambidextrous Material: Polycarbonate Is Waterproof: TRUE Surface Recommendation: cardboard ,wood , glass Brand: uni Line Size: 0.7mm Grip Type: Smooth Brand Name: uni Water Resistance Level: Waterproof Additional Features: Assorted Colors Item Weight: 159 Grams"