Educational trainer

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Optically worked back slivered with protective coating
a) Diameter 50mm, fl 75, 100,150,200,250 and 300mm
b) Diameter 75mm, Fl 75, 100,150,200,250 and 300mm

Optically worked back slivered with protective coating
a) Diameter 50mm, fl 75, 100,150,200,250 and 300mm
b) Diameter 75mm, Fl 75, 100,150,200,250 and 300mm

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