Packaged in 3 main parts (2 links and mount) that snap together that reduce cost of ownership: easiest, quickest arm to install (less than 1 minute installation). Built-In Counterbalance indicator lets the installer counterbalance the monitor weight without a monitor. Self-lubricating precision bearings for ease and longevity of use. Rubber cable management (original design was plastic and wasn't as malleable). 100 percent free of harmful Red List chemicals. Smart Stop allows user to stop each joint anywhere along its rotation to prevent monitor or arm overhand on desk edges. Sleek, modern aesthetic complements any contemporary workstation. Achieves the longest life possible-the ultimate sustainability achievement. Warranty: M8.1 and M8.1 Monitor Arms - 15 Years, 24/7