This NESCO NP15040 conduit nipple is constructed from durable steel and features an electro zinc plated finish for corrosion resistance. Designed for rigid conduit, it offers a reliable threaded connection for your electrical installations. Its 1-1/2 inch trade size and 4 inch length make it a versatile component for various applications.The NESCO NP15040 is a rigid conduit nipple made of steel with an electro zinc plated finish. It has a trade size of 1-1/2 inches and a length of 4 inches. The nipple is male threaded and suitable for use with IMC, Rigid, and Kwik-Couple Conduit. Its dimensions are 1.9 inches OD x 4 inches L x 0.138 inches THK, with a wall thickness of 0.138 inches and a thread length of 1.03 inches.