What is for?High quality products. Get better performance for your Labeling Machines. Specs:Material = AluminumA = 60 mmB = 35 mmC (larger diameter) = 7.5 mmc = 5 mmD = 40 mmE = 2.3 mmF = M4 – 0.7G (diameter) = 5 mmH (thickness) = 15 mmFiber Sensor Bracket