The word "mcls" contains only four characters and four syllables. Four syllable names are used by established brands like Airbnb, Panasonic 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 top-level-domain in the world, famously used by websites like twitter.com. Once you own a dot-com, it will be much easier to rank for your own name in Google.