<p>Authentic and Original Letter Set of 3: metal stamping kit includes (1) uppercase letter set (1) lowercase letter set (1) number stamp set. Creative and unique metal stamp, perfect for making jewelry, DIY projects, and customized presents or keepsakes.</p> <br> <p>Sizes: The stamp heads are 3mm. The letters will naturally vary in size. Please note that sides of stamp are NOT labeled with markings.</p> <br> <p>For stamping soft metals including aluminum, pewter, Alkeme, copper, brass, nickel silver, and also wood. Do not use on stainless steel. Make sure you are working with a flat brass head hammer and steel bench block on an even and stable table.</p> <br> <p>Color of storage cases will vary. Each set includes either an orange or teal storage case to hold your metal stamps in place.Stamps are oil-coated to protect from rust - simply wipe down with a dry paper towel or rag before using.</p>