Various Application: This jewelry stamper is designed for quick and easy engraving on the inside of various rings and is almost no different from hand engraving. Once you have it, you can create your personalized ring. Easy to Operate: First, put the ring into the chuck and tighten it, find the character to be carved, operate the pen and handle simultaneously, and gently draw. Then the letters will be engraved on the ring successfully. Precise Lettering Plate: The lettering plate of the ring engraver has two sides with different size characters, 1.5 mm and 2 mm, supporting English letters, Arabic numerals on the dial. Excellent Lettering Pen: The inside ring engraver uses the sharp diamond nib, which can professionally carve gold, silver, and other materials, ensuring precise engraving and automatic centering. All-Metal Structure: The ring engraver stamper has an all-metal body and a solid base. It’s sturdy and durable. What’s more, the adjustable foot height can keep the machine in Balance.