Hexagon reducer bushing (1-5/8" across flats to 1-7/16" across flats)
 
Outside Hex Size: 1-5/8"
Inside Hex Size: 1-7/16"
 
These Hex Reducer Bushings are used in hydraulic torque wrenches when you want to use an existing 1-5/8" hex link to tighten or loosen a 1-7/16" nut. These will fit in all hydraulic torque wrenches and multiple sizes are available.