SEALING WAX STAMP SIZE: Brass seal head size is approx. (0.98"/25mm); inner thread diameter is approx. 0.28" /7mm; total is approx.2.55''; wax seals sticks (3.5'' x 0.47''). SEALING WAX STAMP HEAD MATERIAL: Wax seal stamp head is made of high quality brass stamp head, which smooth and shiny, clear impint, non-stick, easy to use, easy to clean.CONVENIENT TO USE: Complete and easy to use. These wax seals sticks are easy to melt and dry quickly that are super easy to print, and not easy to break. REMOVABLE BRASS SEAL HEAD: Sealing stamp head is easy to change and install. Its 7 mm inner thread is fit for all kind of handle in CRASPIRE Store. Depends on your random mix match. WIDE APPLICATIONS: Wax seal stamp head s are suitable for wedding, invitations, envelopes, cards, crafts, wine packaging, thanksgiving christmas halloween gift wrap. Unique and vintage retro classic gifts for friends or self-collection.