The Park Tool AV-1 is a straightforward vise insert that is used to hold bicycle axles securely while making adjustments to the hub. Simple to use — just insert the axle into the proper opening and tighten the bench vise. The aluminum jaws prevent damage to axle threads. Features 9 mm and 10 mm openings to fit front and rear quick-release axles.

• Features 9 mm and 10 mm openings