is a replacement lens cover kit manufactured by Cognex for some of their Insight system series. Covers like this are durable plastics that protect the system’s lens from various environmental factors. This replacement kit contains a lens cover as well as an O Ring. Measuring 50mm, this cover fits on specific models of the series. Lens covers are standard issue parts for Insight vision system 5100, 5400, 5401, 5403, 5600, and 5603. Insight color vision system series 5100C and 5400C also use this equipment. This cover can also fit the following ID vision systems: Insight 5110, 5410, 5411, 5413, 5610, and 5613