PocketWizard Pre-Trigger Motor Drive Cable for Nikon D90, D5000 and D7000 cameras. Product #804-522, N-MCDC2-P. Mint condition. Bought at B&H. Used only once. Cable is used with Pocket Wizard receivers for remote shutter release. Has "wake up" function so while being remotely triggered, shutter remains in ready position to focus. Great for shooting sports or other action when camera is mounted in remote location.