Size:

Diameter 5.5mm, thickness 5mm, bead hole 4mm, jump ring hole 1mm, weight about 0.37g/pc

Diameter 6mm, thickness 5.3mm, bead hole 4mm, jump ring hole 1mm, weight about 0.55g/pc

Diameter 6mm, thickness 8.5mm, bead hole 4.5mm, jump ring hole 1mm, weight about 0.6g/pc

Note: The size and weight are measured manually, so there will be some indirect measurement errors.