This is a pair of chrome handlebar risers.  These are made by Show Chrome with a smooth round design with matching round top clamps.  These will raise your handle bars 4" and give them 3/4" of set back.  You must purchase the correct corresponding 12mm riser bolts for your application to install them on your bike.  Most applications do not require you to adjust cable length.  B55-133X

This will fit model:
Most Cruisers with 1" Handlebars