General description The Laser Tools Spline Socket Pre Chamber is specifically designed for use with Mercedes-Benz vehicles, facilitating the removal and installation of combustion chamber retaining rings. Technical specifications Size: 59 splines Drive: 1/2""D Length: 58mm Equivalent to OE number: 604 589 01 09 00 Compatibility and accessories Compatible with engine codes: 601, 602, 603, 605, 606, 661, and 662