XCSOURCE 10 pcs J Hook Buckle Clip Mount for Gopro Hero 2 3 3+ 4 Case Chest Strap OS194 100% brand new and high quality ! These Buckle Clip Mounts are perfect for attaching your GoPro to a Chest Harness, Helmet mount or Adhesive mount. Material: ABS plastic Fit for Gopro Hero 2 3 3+ 4 Camera.