Large frame clamp – 15,680 lb. Capacity made of steel for long lasting durability. Shackle connections securely attach to wide range of loads. Designed for efficient vertical lifting of girders and structural beams. Rfid tracking chip equipped clamps act as crosspieces for spacing hooks and chains to hold bars, racks, rolls, cylinders and other machinery. Adjusts quickly to fit various girder widths. Installation by hand; no tools required for adjustment to beam flange. Manufactured to exceed all asme b30 20 and osha regulations and shipped with certification paperwork. warning: all clamps must be correctly applied to the beam by a competent person and fully hand tightened. Do not use for lifting beams. Do not side load above angles of 45 degrees from vertical . capacity is 15,680 lbs . Color is safety yellow .