1)Quality warranty 2)Competitive price 3)Good plating, Strict inspection before shipment 4)Standard export packing

Steel Commercial door hinge, 4.5"X4.5"X3.4MM, Ball Bearing, Square corners,

Material:Iron/Steel/ SUS 304 /201stainless steel

Knuckle:2Knuckle,3Knuckle,5Knuckle

Size:2.5"X2.5"X1.8mm,3"X3"X2.0mm,3"X3"X2.2mm,3"X3"X2.5mm,3.5X3.5"X2.0m,4"X4"X2.2mm,4"X3.5"X2.5mm,4.5"x4.5"x3.4mm,5"x4"x3.4mm,4.5"x4"x3.4mm,etc

Finish:Polishe Brass (PB)  US3,Satin Brass (SB) US4,Antique Brass (AB) US5,Oil Rubber Bronze (ORB) US10B,Antique Copper (AC) US11

steel commercial hinge 4.5x4x3.4mm