The sizes given are the total length of the collar. If you know the neck size you need, enter this information in the comments box at the checkout. If no information is given in the comments box you will be sent a collar that is the total length that you selected. The EB rolled collar has a 5/8" roller buckle sizes 16" - 24" and the smaller collars 11" - 15" have a 1/2" buckle.
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