Gifts Infinity&reg; Custom Engraved Liquor Flask - Inexpensive Customized Personalized Stainless Steel Flask IMPORTANT!! How to Submit Engraving Details. After you make the purchase please contact us via amazon (Contact Seller) to submit your engraving details. Free Engraving 4 lines up to 20 characters per line. Flask measures 5" height x 3-3/4" width x 1" depth Makes a perfect give for any occasion