BlueHorn Large/L Size 360 Degree Rotating Adjustable Wrist Mount+2 Long Thumb Screw Bolts for gopro Accessories for GoPro Hero4 Silver Black Hero 4 Hero 3+/3/2/1 Camera, Compatibility: All versions of Gopro HD Hero 4/3+/3/2/1 Digital Camera Size:Large 45(L) x 11(W) cm Kit Includes: 1 x 360 Degree Rotating Adjustable Wrist Mount,2 x Long Thumb Screw Bolts