hardware for titl and turnt window drawing hardware for titl and turnt window drawinghandle:material: aluminum or zinc ... corner:Material: zinc alloy, stainless steel, Q235Color: silver5. Top hinge parts: zinc alloy stamping, Q235 axis pin, spring combination, ... outside is plastic cover6. Bottom hinge: 08F stamping, spary, Q235 axis, plastic cover combination7. keeper ...