18 mm extra long box end wrench.Extra Long Box end wrench made of premium chrome vanadium steel, Heat treated for maximum strength, Lasting durability.Two convenient sizes allow you to easily tighten or loosen more bolts simply by flipping the wrench over. It is convenient to work in a narrow space. The ratchet mechanism in the box end allows you to turn fasteners without removing and repositioning the wrench.The 72-tooth ratchet gears need only a 5-degree working swing arc. The 12-Point box end delivers reliable torque to tighten or loosen any bolt without rounding. Top-quality hand tools for every repair project.The unique ultra-long design can increase the torque, which is easier and more labor-saving than other box wrenches on the market.Ideal for getting into tight spots.Practical design, widely applicable in industries as vehicle repairing and maintaining, machinery, electric power and Household making it ultra-versatile for a variety of tasks and jobs. Product Description Product Highlights Optimal Connection The 72-tooth ratchet gears need only a 5-degree working swing arc.Universal spline drives for 12-point, 6-point, spline, e-torx, and square fasteners. 12-Point Opening To prevent round-off, it contacts and applies force to the flat sides of fastener heads rather than the corners. Extra Long Length Up to 80% longer and more torque than standard length.Ideal for getting into tight spots. Practical design. Application Ideal for getting into tight spots. Extra Long Ratcheting Wrench Set Mertic/SAE Mertic Mertic SAE Mertic Size 8 - 22mm 8*9 - 17*19mm 5/16"*11/32" - 3/4"*13/16" 8 - 19mm Style Ratchet Flex-Head, Ratchet Flex-Head, Ratchet 0-Degree CR-V Steel Package EVA Pouch EVA Pouch Single Extra Long Wrench Mertic/SAE Mertic Mertic Mertic Mertic Mertic Size 18mm 15mm 21mm 12*13mm 14*15mm Style Ratchet Ratchet Ratchet Flex-Head, Ratchet Flex-Head, Ratchet CR-V Steel 72-Tooth