Latvian electronic music band Jumprava use/used a particular percussion instrument in a number of their pieces, which can be seen in this 1987 concert recording:
The ~60 seconds starting at the linked position are the transition between two pieces which both use that instrument.
It consists of a steel frame mounted on a stand, with a round tube suspended from it, and two steel plates mounted on a separate stand. It is played with one or two conventional hammers, the kind which can be found in any hardware store. Either the frame, suspended tube or plates can be struck, with different parts of the plate apparently producing different sounds, as briefly seen here:
Is this anything standard (and if so, what is it called), or is that the band’s own creation?