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http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=3959 Thorlabs’ OTKB Modular Optical Tweezers System is designed as a complete optical trapping system for the capture and manipulation of microscopic-sized objects. The modular design allows the optical path to be easily modified to add functionality. In this video, we will unpack and install an OTKB system.