solid sterling silver jump rings .925 (light and Heavy) see below for wire diameters used.                  
2.25mm0.5mm
2.5mm0.5mm
2.5mm 0.6mm
3.0mm 0.5mm
3.0mm 0.6mm
4.0mm 0.6mm
4.0mm 0.7mm
5.0mm 0.7mm
5.0mm 0.9mm
6.0mm 0.8mm
6.0mm 1.0mm
7.0mm 1.0mm
8.0mm 1.1mm
9.0mm 1.1mm
10.0mm 1.48mm