It's a buckle. It's great, its what I ordered, it was shipped fast. A+
Excellent customer service. Prompt delivery of product. Affordable. Im very happy.
Spare Buckle - 50mm
So to be fair after 10+ years of owning my pack I broke the buckle shutting it in the car door. It still had a lot of life in it. Ordered the replacement and it was a breeze to put on and still has that great quality that made me go with Eberlestock in the first place.
High quality parts that were shipped and delivered very quickly.