This R&M Hoists Manual hand geared trolley RPTC1000, 1 ton capacity with Adjustable Flange Width flange width from 7.88"-12.20" including 10' drop of hand chain includes 10' drop of hand chain Designed for precise load control and short traversing applications suspending both manual and electric top hook hoists. Crown-tread wheels compatible with W and S beams. Wheel ball bearings are sealed and maintenance-free. Easily Adjustable Flange Width for a wide range of flange widths. Safety drop lugs and rubber bumpers are standard. Single flanged machined steel wheels add to the smooth motion. Spark resistant trolleys available. 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.