Heavy duty design, including improved armature components and low absorbent motor housing for maximum jobsite durability. Labyrinth construction features a complex series of channels to prevent penetration of dust and debris into the field and armature for maximum operational life. Motor winding protection features increased "Zig-Zag" varnish on the armature and hardened powder on the field coils to act as an impenetrable barrier to dust and debris. Items included: Side handle (143486-6), lock nut wrench 28 (782412-6), wheel cover (141E83-2), inner flange (224317-9), lock nut 5/8"-45 (224486-6).