The Matco 10-piece Opti-Torque Pro Metric Long Combination Wrench Set, No. SMCLM102T, offers an open end with 25 percent more torque on the fastener, reducing tip spread by 50 percent. High-grade alloy steel provides increased strength while the long wrench beam provides the ability to apply more torque to loosen and tighten bolts. Sizes available: 10 mm to 19 mm.