Sniper X was G.Skill's DDR4-era gaming line pitched below the Trident Z family — a textured grey-and-black heatspreader instead of the taller finned designs, and no lighting on this version.
This kit is 2×16GB, 32GB in total, rated 3600 MT/s CL19. A CL16 rating at 3600 MT/s sits toward the tighter end of what DDR4 kits at this speed typically carry, and tighter timings usually mean the memory controller has less headroom to spare, so check your platform's own DDR4 support before assuming 3600 MT/s is a given.
This is standard unbuffered, non-ECC UDIMM for desktop boards.