These instant-bonding versatile adhesives work great for a multitude of craft, school, hobby and art projects. They are perfect for heavier materials like wood or metal embellishments, thick cardstock or handmade papers. Their super strength also works on foam, plastic, glass and more with no mess and no drying time. Details:Clear1/2" (13 mm) diameter12 rolls (250 adhesive dots per roll, 3,000 total dots)Acid free and lignin freeNontoxicPermanentNo mess or drying time