The inscription covers an area of 2′9.5″× 10.5″(65.09 cm x 26.67 cm). The ancient writing is preserved well because of the corrosion-resistant iron on which it is engraved. However, during the engraving process, iron appears to have closed up over some of the strokes, making some of the letters imperfect.
It contains  verses composed in Sanskrit language, in shardulvikridita metre. It is written in the eastern variety of the Gupta script. The letters vary from 0.3125″ to 0.5″ in size, and resemble closely to the letters on the Allahabad Pillar inscription of Samudragupta. However, it had distinctive s (diacritics), similar to the ones in the Bilsad inscription of Kumaragupta I. While the edges of the characters on the Allahabad inscription are more curved, the ones on the Delhi inscription have more straight edges. This can be attributed to the fact that the Allahabad inscription was inscribed on softer sandstone, while the Delhi inscription is engraved on the harder material (iron).
The text has some unusual deviations from the standard Sanskrit spelling, such as:
*  instead of : the use of dental nasal instead of anusvāra
*  instead of : omission of the second t
*  instead of : omission of the second t
*  instead of śatru (enemy): an extra t