The name Ergotron is derived from the words Ergonomics and Electronics. As the name suggests, Ergotron's mission is to improve the human interface with innovative, high-quality products.This product is a Grommet Mount Base for 1-1/5,1 cm ( 2 inch ) Round Pole which attaches to Work surface through hole 3/20,3 cm ( 8 inch ) to 7,6 cm ( 3 inch ) (10 to 76 mm) wide, up to < 10,2 cm ( 4 inch ) (102 mm) thick.