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Optimize your workspace with technology support and ergonomic accessories from KnollExtra.
Sapper™ Single Monitor Arm
Sapper XYZ®
Sapper™ Double Monitor Arm
Sapper 50® Monitor Arm
Sapper XYZ® Crossbar
Power Disc
Discover proven performance and Scandinavian design to create a space that works for you. Most products ship free in 1-3 days.