[Professional Grade] - Designed to hold clutch baskets, flywheels, gears, sprockets etc. - Jaws open to 5" wide. - 8mm pins on one side for holding the flywheels (Only fits flywheel with an 8mm holes - may not fit flywheel holes for model selected - check before purchasing if required for flywheel use) This tool is mainly used as a clutch hub holding tool.