One Row Spike Collars Sizing Chart

 Size Neck Size Collar Width
10 6.5 to 8.5 inches 1/2 inch
12 7.5 to 10.5 inches 1/2 inch
14 9.5 to 12.5 inches 1/2 inch
16 10.5 to 14.5 inches 1/2 inch