Easily separate your connecting rod caps with this non-marring hand-held splitter. Just turn the handle and the unit opens up so the 4 non-marring ends push the cap apart. Fits Chevy S/B and other similar journal diameters, minimum diameter is 1.980, and the maximum when fully expanded is 2.330. U.S. Pat. 7,155,791 Product Features:Hand Held Modelwith 4 Non-Marring EndsPatented