Dual Remote Shutter Release Cables -a 20in Cable + a 20ft Air Release Dual Remote Shutter Release Kit with a 20" Cable Release and a 20ft Air Powered Release For any camera having a Threaded Shutter Release such as Nikon FE,FM,D100, Canon AE-1, Pentax K1000 Great for Time Exposures and eliminating camera shake Operate from up to 20ft away and arrange your subject while you shoot