The OTC Universal Cylinder Liner Puller, No. 5668, is designed to be used with an impact wrench for quick cylinder liner removal. The spring loaded puller arms automatically adjust to fit the liner for a fast set-up time. Featuring a low profile, the puller is designed to work in areas where space is limited. The tool accommodates bore diameters from 3-7/8" to 6-1/4", sleeve depths to 15", and liner wall thickness of 0.273" min. The drive screw hex size is 1-1/8". Works on select Mack, Volvo, Detroit Diesel, International, Cummins, Navistar, and other Caterpillar engines.