4.5 Inch Reamer Bit for Boring Attachments, 6577299 attaches to the boring attachment and rotates as the loader is backed up to bring the service through the tunnel.
When the boring bit reaches the other side, a reaming bit is installed. The loader is backed up and the rotating reaming bit further compacts the soil as it pulls the service through the enlarged tunnel.
WARNING: This product can expose you to chemicals including lead and lead compounds, mineral oils, and phthalates which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov