Available with color coated surface, offered black colored retainer spring is used as an integral part of electrical apparatus. Utilization of this spring can be noticed in garages also. Produced from iron wire of specific length range, offered retainer spring is appreciated for its long lasting quality and low maintenance design. Operating pressure of this spring depends on specific application requirements. Compact in shape, this highly durable compression spring deserves praise for its application specific design and long lasting surface finish.