Clevis fork joints GN 751.1 basically correspond to the clevis fork head of DIN 71752 (type A), but, unlike the DIN part, they have a rotating shaft and an additional pin with circlip (type KL or SL), which can be assembled and disassembled without tools.
The rotating shaft allows non-dynamic radial movements to be compensated, movements which may occur e.g. when using cable winches. Also, there is no need for the otherwise necessary alignment of joint heads during assembly.