Magic Metal Spikes Collar Bib Necklace Studs Gold Tone Choker NH03 Fashion Jewelry Ships from the USA Spikes Collar Necklace. Spread of Spikes Measures 7 inches. Long Spikes Measure 2 inches long. Entire Length of Necklace, Open Laying Flat: 23 inches. Makes a perfect gift. Search Magic Metal Jewelry for more jewelry styles.