Quality Cranks are rare materials in Xenoblade Chronicles. They can be traded for with Mixik and Qofaria, and dropped by various small Mechon. During the two battle event at Galahad Fortress, the two Defensive Guard Unit variants, the two M94 Guard Unit variants, as well as Face Nemesis and Gold Face do not drop any chests but the Quality Crank they carry can only be obtained by using Riki's Yoink! ability.