1PC neck collar with Chain. Neck collar: Inner Diameter: 13.5cm/ 5.3”;thickness: 2.0cm/0.78”. High: 8.0 cm/3.15′. Neck collar: Inner Diameter: 11.6cm/4.5”;thickness: 2.0cm/0.78”;high: 8.0cm/3.15′. Note: due to the measurement method and measuring instruments is different, so there will be a little deviation, not a quality problem or introduce discrepancies. 1CM=0.39inch 1inch=2.54CM. Ackage: All items will be carefully packaged in a plain wrapper with no indiscrete return address or contents notations so as to guard your privacy.