Listed is a used Spank Spike 50 stem, in great shape. It is 50mm, has a 31.8mm clamp diameter. It shows some mild scratches and marks typical of use, but is clean and presentable overall.

Please inspect the images for detail. Shipping is for the contiguous United States only, unless you can buy through eBay's Global Shipping Program. Please message me with any questions, thanks for looking!