The ALLU D-Series Screener Crusher Bucket attachment works with wheel loaders, excavators, skid steers or back hoes to screen, crush, pulverize, aerate, blend, mix, separate, feed and load materials all in one stage—increasing the profitability and efficiency of pipeline construction operations. It is an effective tool for pipeline padding and backfilling, because it allows material to be screened on site and then backfilled directly into a trench, eliminating the need for a dedicated stationary screening machine. The ALLU power adjustment valve promotes powerful startup and rotation allowing the attachment to efficiently screen and crush wet or dry material from 0.60-inch to 6-inch (15-mm to 150-mm) fragment sizes. Straight side plate construction makes the ALLU D-Series Screener Crusher Buckets easy to fill and able to hold a greater volume of material, while the standard power adjustment valve prevents overloads. Locating the hydraulics on the back of the attachment keeps them well protected from damage, while patented fender plates protect the bearings and seals. Its patented construction keeps nuts and bolts away from the material flow. ALLU D-Series Screener Crusher Bucket attachments are available in over 60 models to fit any excavator, wheel loader, skid steer or backhoe.