Copyboard cover hinge compatible with MF 4010, 4012, 4018, 4120, 4122, 4140, 4150, 4300, 4310, 4318, 4320, 4322, 4330, 4340, 4350, 4352, 4370, and 4380 models.Designed to support the copyboard cover , this hinge smooth and closing.Constructed for durability and consistent performance in standard operating conditions.Installation requires basic tools and follows placement.Part functions as a direct replacement for worn or damaged hinges on specified models.