Ergotron - LX Desk Monitor Arm in Black, Monitor Mount with patented Constant Force Technology, for displays up to 34", 3.2-11.3 kg with VESA-Standard : Amazon.co.uk: Electronics & Photo
45-241-026 Ergotron LX Series Desk Mount LCD Arm. Maximum weight capacity: 11.3 kg, Maximum screen size: 86.4 cm (34"), Minimum
Ergotron 45-241-026 LX Desk Mount LCD Monitor Arm - Silver - for Screens up to 34"