1040 Plain-Carbon Steel Construction Useful for Dual Disc Systems 10-Spline GM Applications Pilot Bearing Tip Saves Time On Installations Ram Clutches has introduced a new metallic clutch alignment tool. This is for 10-spline GM applications. Machined from 1040 plain-carbon steel and each alignment tool features a pilot bearing tip to suit GM application. While plastic clutch alignment tools have been invaluable in clutch installations, they are not always exact. Ram?s new metallic device is a professional tool that ensures accuracy. In addition, it is especially useful in centering dual-disc assemblies. Because its long shaft diameter is smaller than its splined diameter, this device allows you the convenience of installing the flywheel on the engine, slipping the alignment tool into the pilot bearing and sliding the discs onto the tool one at a time with the floater plate sandwiched between.