3" Pink Hair On Hide Spiked Leather Dog Collar - Ready To Ship Fits 20" to 24"3" Pink Hair On Hide Spiked Leather Dog Collar along the outside. collar ships next day. Fits 20" to 24" This collar is 3" WIDE spikes outside spikes are 1 1 8" SIZING INFO; If your dog has an 18" neck and is full grown, we suggest a 16" 20" collar for a perfect fit. (We don't go by the total length of the collar) If your dog has an 18" neck and is still growing, 18" 22" is the best size collar to choose. If you do not have a tape measurement, use a