What is the McMaster-Carr application, how does it work?

According to the introduction of McMaster-Carr Supply Company, McMaster-Carr is a Business app on the Android platform. There is currently a 2.6.6 version released on Feb 13, 2020, you can see the details below.

Order over 595,000 products from the palm of your hand.

Terms and Conditions: https://www.mcmaster.com/#terms