... 4.Size:OD 18,20,25,30,35mm, etc Hitag2 pvc disc tag details: physical Dimension: OD 18,20,25,30,35mm ... weight:3g-5g(depends on the part)printingprintable with offset, silkscreen ... ,personalizing.printable with ink Jet numbering(various different numbering formats)Material: pvc (glossy or matt ...