Here is a Birel/Art 50 mm clamp for 50 mm blue hub. The combo is shown in the last photo as an application but only the clamp is being offered in this listing as shown in photo one. The pinch bolt is included and is coated as shown This is the latest version Sold by the piece.
Please examine this product closely to insure it is something that you can use. It is better to ask questions in advance than after the purchase.
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