Thick Genuine Leather Spiked Studded Dog Collar 1.5" Wide Sized to Fit 18"-22" Neck. Retriever, Doberman, Rottweiler, Bulldog Superior quality of craftsmanship. Made of the high quality genuine leather, strong and durable studded spiked dog collar. Nickel plated studs, spikes, and heavy duty D-ring. Trimmed with thick waxed tread Overall length 25.5", will fit 18"-22" neck 1.5" wide double layer genuine leather 5 adjustment holes. Please measure your dog for fit before you place the order.