This R&M Hoists beam clamp RBC1000 1 ton capacity fits beam flange range between 3"-9". It provides temporary or permanent mounting point for hook mounted hoists or lever pullers. Versatile jaws designed to mount on a wide range of tapered or flat beams. Built-in suspension bar allows for low headroom. Easily installed and adjusted by hand. Designed to minimize stress applied to beam. Designed for industrial use; read the installation, operation and maintenance manual for safe operation. One year warranty - details @ http://wwwrmhoistcom/downloads/StandardWarranty.pdf. Assembled and tested in Springfield Ohio. Each unit is individually serialized and is provided with a load test certificate; all R&M manual chain hoists and lever hoists are statically and dynamically tested with a minimum of 125% rated load prior to shipping.