Canon ET-1000N3 Extension Cord for 5D, EOS-1V/1VHS, EOS-3, EOS-D2000, D30, D60, 1D, 1Ds, EOS-1D Mark II, 10D, 20D and 30D. 33 ft. extension cord for connecting the new EOS bodies with Timer Remote Controller TC-80N3 or Remote Switch RS-80N3