These are 100 % Genuine Xerox ColorQube 8570/8580 Ink Sticks.They will work in any ColorQube 8570/8580 printer using a simple Sensor Key which I will provide.This use of this key will not cause any problems with your printer and takes about 5 seconds to use. It is simply triggering the ink gate to open and allow the ink stick to slide down the shoot.

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