[FANTASTIC FINISH] Matte black finish resists finger marks while offering a classy look.With Perfect treatment, black door hinges possess ,moisture and ageing resistance feature for Warehouse door, kitchen or outside using.Our products offer you a longer life span in normal conditions. [SIZE]Our black ball bearing door hinge is 4 Inch (100mm) with 4 Inch (100mm) square corner, which can be suitable for different kinds of doors in our home. [BALL BEARING] Extremely smooth and quiet operation, perfect for any commercial or intensively used door. Also Each leaf is a robust 0.118inch(3mm) thick! ANSI/BHMA A156.1 Grade 1. [MATERIAL]Our black ball bearing door hinges are made of Stainless Steel Material, Fit For Any Extremely Weather Condition NO Squeak Ever - Our door hinges are specifically manufactured with Electroplating Coatings. They are highly rust and include the damping oil feature which is built to reduce metal-to-metal friction., Weight: 4.63411674724 pounds, Manufacturer: Ynusgeyx