That looks like a marimba. If you’re wondering why you’re not hearing it in the video, that’s because someone potted in the McCoys version to the 1975 Rick Derringer solo version.
Here’s the actual sound that goes with the video, given a slightly Carribean twist and you can hear the marimba though obviously not played by the guy on stage.
Of course we purists like the old version better, but the newer one is not without its charms.
Sloopy history is convoluted.