H1703k 10 Blk 3/8 Spike Col Leather Adjustable sizing to fit necks 6.5" - 8.5", Width: 3/8", Color: Black. The collar is made of durable leather and features acorn spikes the Harley Bar and Shield metal emblem. This leather collar will allow dog to ride with style. Harley-Davidson - Leather Spiked Collar is made for the dog that was born to ride. Handcrafted in the USA.