Park Tool AV4 - axle and pedal vice

Features:
The heavy duty AV-4 is a must-have tool for every mechanic's workbench
Designed to securely hold 5/16 inch to 9/16 inch axles for easy wheel-hub and pedal adjustments
A choice of three precision-machined openings allow you to grip axles and tighten the tool in a workbench vice
Aluminium jaws prevent you from damaging ultra fine axle threads
Bridge springs keep the jaws properly aligned and allow the tool to open automatically when the vice is opened