This 3/4" (18mm) x 2" (50mm) aluminum keychain is hand stamped with elements of the Periodic Table to spell Father. Many words can be spelled with elements, send me a convo to see if the word you would like will work. I am glad to do custom text on this piece. The numbers are the correct atomic weights of each element. The aluminum tag is lightweight & will never tarnish or rust. I have hand sanded the corners to a smooth, rounded finish & given both sides of the piece a beautiful, brushed finish. A perfect gift for the smart, science loving man (or woman!) in your life. TO ORDER: Let us know the elements you would like stamped in the note to seller section at checkout. Your keychain will come in our signature gift box. Find us on Facebook: www.facebook.com/larkandjuniper on Twitter & Instagram: @larkandjuniper NY State residents will be charged sales tax according to their local municipality’s tax rate. Please let us know if you have any questions. Thanks! Hand Stamped, Personalized - Periodic Table Elements Father Keychain Father’s Day Gift Men’s Geek Graduation