Following are the sizes available:

50 mm X 50 mm X 12.5 mm
50 mm X 50 mm X 25 mm
50 mm X 50 mm X 37.5 mm
50 mm X 25 mm X 12.5 mm
75 mm X 75 mm X 25 mm
75 mm X 75 mm X 37.5 mm
75 mm X 75 mm X 50 mm
100 mm X 100 mm X 50 mm

Grade = N35
We have various sizes & grades available according to your requirements. Contact us for more details.