42 Fan blades :A broken ceiling fan will reduce the comfort of your home, and replacing the new ceiling fan blade is more economical than a new ceiling fan; The ceiling fan blade arm keeps the ceiling fan in optimum balance and good performance.Easy and simple installation:ceiling fan blade arms are installed in a hanging style, without the need for complex installation procedures. Simply install the fan blades in the appropriate position and connect the power to use. The installation process is simple and fast, without the need for additional professional skills or equipment.Fan blade arm: Simply use the blade arm to secure the fan, be sure to cut off the power before replacing.substitute fan blades arm for ceiling fanThe distance between the fan blades outer two holes is 31/2; the distance from the outer hole to the center hole is 25/8, and the distance between the motor holes is 11/2; The blade arms can be modified by drilling more holes for better fit your ceiling fan blade; Please make sure the size of the blade arm holes before purchasing for better usage. Please make sure the size of the blade arm holes before purchasing for better usage.t.Ceiling fan blade and arm substitute The durable and reliable quality keeps the ceiling fan blade arms lasting for many years in usage and comes with a stylish Antique bronze finish that also promotes your home or room ceiling fans aesthetics.