Primal Gladiator's Mail Gauntlets is part of the transmog set Primal Gladiator's Ringmail Armor (Shaman only), which the Appearances collection lists in 2 versions. The other 16 pieces:
Items Numbered Next to Primal Gladiator's Mail Gauntlets
Blizzard numbers items as they are created, so the named items next to ID 115943 (115938 to 115948) were usually added in the same batch as Primal Gladiator's Mail Gauntlets: the same quest line, zone, vendor or reward set.