The 5-pc Large Metric Flex Ratcheting Flarenut Wrench Set, No. SRRLFM56TC, from Matco Tools, is a comprehensive collection designed for maximum efficiency and durability. This line features fixed 15-degree offset flarenut and ratcheting flex-head wrench ends, covering a larger range of sizes from 15mm to 19mm without any skipped sizes. Engineered for longevity, the redesigned ratcheting mechanism exceeds ASME standards by 200-300 percent. Ideal for hydraulic and oil line fittings, including brake lines, ABS systems, and transmission or fluid cooler lines. The radiused drive corners are designed to protect soft fittings and hardware, while the ratcheting mechanism allows users to work efficiently in tight spaces.