·For use with Thunderbay Lithium powerheads, fits 4/5 inch shaft

·Reversible drive and bottom-mounted centering ring allows you to re-open frozen over holes with ease and flush away slush and ice chips

·Reversible drive flushes slush out of the hole

·8" cutting diameter. 31.5" cutting depth

·Included blades protector snaps on and off without fingers