Primal Gladiator's Wyrmhide Gloves is part of the transmog set Primal Gladiator's Dragonhide Armor (Druid only), which the Appearances collection lists in 2 versions. The other 16 pieces:
Items Numbered Next to Primal Gladiator's Wyrmhide Gloves
Blizzard numbers items as they are created, so the named items next to ID 115857 (115852 to 115862) were usually added in the same batch as Primal Gladiator's Wyrmhide Gloves: the same quest line, zone, vendor or reward set.