praktischem
Praktischem is a form of the German adjective praktisch, used as a modifier in phrases where the noun it describes is in the dative case and there is no determiner present. It translates roughly as “practically useful” or “practical” in English. In German grammar, adjectives are declined to reflect the case, gender, and number of the noun. The ending -em on praktischem appears in the dative singular for masculine and neuter nouns when the adjective stands without a determiner (strong declension).
Examples of usage include: mit praktischem Werkzeug (neuter, dative singular, no determiner), mit praktischem Material (neuter),
The underlying meaning of praktisch is “concerned with practice,” “useful,” or “handy,” and it is widely used
In summary, praktischem is the dative singular form used for masculine or neuter nouns when no determiner