Product Size: 4in: 100mm(L) x 54mm(W), 4”(L) x 2.13”(W) 6in: 150mm(L) x 72mm(W), 6”(L) x 2.84”(W) 8in: 200mm(L) x 100mm(W), 8”(L) x 4”(W) Packing List: 4in: hinge X 2pcs, M5 screw X 12pcs 6in: hinge X 2pcs, M5 screw X 14pcs 8in: hinge X 2pcs, M6 screw X 16pcs Mirror Polished Stainless Steel T-Strap Hinge An extra heavy duty cast stainless steel "T" hinge for transom doors, motor boxes and engine hatch covers. Material:316 Stainless Steel Require M5 flat head mounting screws for perfectionist installation.