This is a pair of half shafts (swing shafts or dog bones) which will work with most Traxxas electric vehicles, the Nitro Street and the Nitro Buggy. But these will not work with the Nitro Hawk (they are too short).
Features:
Includes: Two inside shafts, two outside shafts and four universal joints (metal balls with 4 pins sticking out in a cross pattern)
Specs:
Compressed length: 1 11/16