Material: Glass Finish Type: Powder Coated Installation Method:Glue Down Package contains: Wood mat, mosaic, glue, small bowl and spoon, powder sealant, cleaning sponge, gloves 1.This mosaic stained glass are uniform thickness, beautiful and flawless, has a smooth surface and bright colors. The edges have been passivated, so there is no need to worry about cuts on your hands. 2.These mixed color mosaic tiles can add a bit of color to your DIY Craft Project, create beautiful patterns not limited by imagination. 3.Training children's handwork ability and creativity. These mixed color mosaic tiles are the craft supplies for DIY! 4.Just use glue to fix the glass mosaic on the coaster, wait for it to air dry, mix the caulk with water to make it viscous and apply the coaster, Then put on disposable gloves and sponge the excess caulk and wait for it to dry and you are done! 5.Mosaic tile will be meaningful gifts for birthday, christmas, anniversary, holiday gifts, and so on. Interesting mosaic supplies can also keep children busy and away from digital screens during their leisure time, and improve childrens hand-eye coordination and perception of color. Note: We recommend that children under the age of 10 make it with their parents, because some accessories are relatively small and parents need to accompany their children to make.