HALOFUN 75PCS STEM Toys Kit, Educational Construction Engineering Building Blocks Learning Set for Boys & Girls Magnetic alphabet letters crafted from quality hardwood with bright, warm colors children love ABC letters feature strong, full back magnet that attaches firmly, yet is easy for a child to use No glued on paper! Our alphabet magnet letters feature a long-lasting, silk screen print finish Wooden magnetic letters are lab tested & exceed American safety standards so they're safe to use Create educational, early learning letter games in the classroom, or on the refrigerator at home!