Bolting up to an engine block this tool meshes with the ring-gear teeth of either a flywheel or flex-plate and stops the engine from turning. Needing to only have its bolts done up finger tight this tool can be fitted or removed in under a minute. It can be then used to remove / accurately tension the bolts for various components such as the flywheel / flex-plate, clutch and main crank pulley.

On top of the simplicity and easy of use is the question of tension accuracy. Did you do it up to the correct amount of did a small amount of movement from the engine throw out the intended tension? With one of these everything is held in place allowing one to take their time in accurately using a torque gauge / tension wrench to the right amount every time. Seeing that its not an uncommon story to have flywheel bolts fail from over-tension this makes a lot of sense.

3SGE Beams: Will not suit the earlier 3SGE engines