Nut and bolt removal is easy with the Park Tool Metric Quad Wrench: 15mm, 17mm, 19mm, 3/8in. With four handy sockets you'll have the leverage you need for removing tight bolts, and quick installation. The Metric Quad wrench has one 3/8in socket drive for applying a socket of your choice, and three forged sockets for fulfilling most metric socket wrench needs.