The name "mcls" has only four characters and four syllables. Leading companies using four syllable names include Airbnb, Panasonic and Unilever.
This domain was first registered in February 1997. Older domains have an advantage when ranking in search engines.
Mcls.com is a .com domain. Dot com domains are the most valued top-level-domain in the world, famously used by websites like twitter.com. A .com is the first thing people think of when they think of a website.