Eleiko (and probably all other calibrated comp plates) are the following dimensions

Wt DIAMETER THICKNESS
25 kg 450 mm 25 mm
20 kg 450 mm 23 mm
15 kg 400 mm 21 mm
10 kg 325 mm 21 mm
5 kg 228 mm 21 mm
2,5 kg 190 mm 16 mm
1,25 kg 160 mm 12 mm
0,5 kg 134 mm 8 mm
0,25 kg 112 mm 6,5 mm

The discs
The discs must be of the following weights and colours:

25 kg red
20 kg blue
15 kg yellow
10 kg green
5 kg white
2.5 kg red
2 kg blue
1.5 kg yellow
1 kg green
0.5 kg white

The diameter of the largest discs: 450 mm with a tolerance of ± 1 mm.

The 450 mm discs must be covered with rubber or plastic and coated on both sides with permanent colours or painted at least on the surface of the rim.

The discs lighter than ten (10) kg may be made of metal or other material as approved.

All the discs must have a clear indication of their weight.