This is one of the two electromagnetic cable releases available for the RZ67 and Mamiya 645 Pro and Super cameras. Shutter Release Cable 1m (39.7 in.) is coiled. Shutter Release Cable 4m (13ft.) is straight. Both releases plug into the Remote Release Socket on the bodies of the cameras.
NOTE: It is also possible to use a traditional screw-in, non-electromagnetic cable release with these cameras. The 645 cameras require a cable release adapter which comes with the body and attaches to the side of the camera. The Pro and Super models use B&H# MACRA645, while the Pro TL uses B&H #MACRA645PTL.