Allstar 5/8 inch Box Wrench 3/16 inch and 7/32 inch Allen Wrench Valve Lash Wrench for Poly Lock features a valve lash wrench. It features a 5/8 inch box wrench and 3/16 inch and 7/32 inch allen wrenches. It is designed for use with poly lock assemblies. The valve lash wrench saves precious time and eliminates fumbling with two separate wrenches. It is backed by a 90-day limited factory warranty and sold individually.