This SPower machine is setting a new standard for line boring machines in the heavy equipment repair industry. Rugged, reliable and above all affordable. This dual system features an ultra quiet 3100w servo drive unit with 400w feed drive. The auto welder automatically sets the rotational speed and feed rate for the selected bore diameter. The auto welder will perform sector welding, skip welding and reverse welding. All 55-300mm machines come standard in the FLEX brand or Milwalkee pack systems. The 55-300mm dual system machine is covered by a 1 year manufacturers warranty.