Thick Genuine Leather Spiked Studded Dog Collar Red Sized to Fit 18"-22" Neck 1.5" Wide Retriever, Doberman, Rottweiler, Pitbull 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.