This is a camera strap called the CARRY SPEED SLIM MARK III. The manufacturer's website is no longer available, so please refer to the Amazon page for details. https://www.amazon.co.jp/Carry-Speed-【日本語説明書%EF%BC%8F1年保証付き】-PRO-MarkIII/dp/B01LWJWVL6 It's a strap with a cushion pad, and I used it with a D500. The joint is sturdy. The plate was left attached to the D500, and as you can see in the photos, it shows some signs of use, but it works perfectly fine. Everything in the photos is included. - Model Name: Camera Strap - Material: Nylon - Features: With cushion pad - Accessories: Camera mounting plate - Connection: Ball joint type Thank you for looking.