The Park Tool Axle & Spindle Vise Insert simplifies the rebuild process of many components by eliminating slippage of circular objects (axles, spindles, bolts, etc) Features: Holds a wide variety of axles, spindles and Park Tool freewheel remover/lockring tools Made from precision extruded aluminum with top retainer legs and magnets for easy bench vise use Jaw openings for 5, 9, 10, 12, 14, 20, 25, 30, 36mm plus a mini V-block and 1" hex