Acro 1-1-4-TH 1-1/4" Brass Barrel Lap

FeaturesBarrel LapEnsures fast, accurate lapping of long or short holes.Instantly and accurately adjustable.No set-up time or special equipment needed.Longer life, reducing lapping costs.Milled eccentric slots in brass barrel permit expansion of 15% or more by simply turning adjusting screw.Blind HoleDesigned to accurately lap "closed-end" holes.Same "slotted" feature as the barrel lap.Recessed adjusting screw in end of cylinder permits lap to reach the very bottom.Permits high-speed lapping without galling or seizing.Holes are precision lapped from top of hole to bottom