... Made of SUS304 ,heavy gauge Tri-step incapsulated bottom with 4.5mm al core LFGB arroval Stainless steel sauce pan ... Surface: satin polished interior and mirror polished exterior Bottom: incapsulated with 4.5mm aluminum core + 0.5mm SUS430 (as induction ... steel round-shape knob, stainelss steel lidProduct feature: with straight shape, wide rim with step , apply to induction cooking , dishwasher safe ...