The Teknik Office Left Hand Cube Modular Arm in dark grey is an optional extra that can be purchased separately to complement the Cube Modular Chair Base. The arm is easy to attach to the base, is great for customising your waiting area and has a discreet inbuilt USB port that visitors can access to plug in their electronic devices while they wait and relax. The right hand Cube Modular Arm is also available for maximum configuration within any reception scenario.