These blocks are lighter duty and designed for use with soft rope. Do not use with wire rope or cable. Blocks are manufactured with type 304 stainless steel and the sheaves are fitted with iron-copper bushings.
These blocks have an ultimate strength 4 times the working load limit. As with all block and pulley applications, one must pay close attention to working angles.
See our Blocks, Pulleys, and Sheaves Knowledge Base for more info.