Crusher Bucket, FB Series, is an excavator-mounted bucket attachment that allows for portable and affordable crushing operations on site. It processes material to produce sub base on site, using available materials at a fraction of the price of purchasing or renting a traditional portable jaw crusher. A quick and easy adjustment of the thickness of incoming material allows one to adjust output material size from 13 cm (5,5-inches.) down to 1,5 cm (0.5-inch.).