Notes: Professional installation is highly recommended (No Instruction Included). For any needs please contact us. Feature: This tool drives camshaft bearings smoothly. Remove or insert camshaft bearings in nearly all engines from compact cars to heavy trucks. Range of 1.125" to 2.690" (28.58 - 68.3mm). Very easy on the bearings The expander has a neoprene sleeve over which the split driving plugs are mounted and expanded to size. Fitment: Fit For Bearing Range:1.125"-2.690" Package Include: .