They are all copper and details reading left to right are as follows
1) 16.00mm x 1.36mm and 1.92g
2) 14.00mm x 1.46mm and 1.49g
3) 16.69mm x 1.77mm and 2.62g
4) 14.00mm x 1.21mm and 1.25g
Thanks
Roy
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