Detail Writers make writing and personalization easy and fun. Each bottle comes with a cap that screws on to it. Bottle holds 1 ounce of glaze. Measurements with cap attached: 3.5 x 1.5 x .875 inches. 5 Bottles and 5 Caps included in each case. Be sure to order the Writer Tips that attach on to the bottle's cap to create lines of different thicknesses.