The name "mcls" has only four characters and four syllables. Four syllable names are used by established brands like Panasonic, Airbnb and Coca-Cola.
This domain was first registered in February 1997. Older domains have an advantage when ranking in search engines.
Mcls.com is a dot-com domain. Dot com domains are the most sought after domain extension in the world, used by famous websites like facebook.com. A dot-com is the first thing people think of when they think of a website.