PATENTED DESIGN? Ratchet tubing wrench open-end dedsign helps you to reach the tightest places, where most ratchet wrenches would not reach, convenient and quick. It allows for easy access and turning of hard to reach bolts. 180°FLEX-HEAD & 72 TOOTH RATCHET? The slim profile with 180° flex is specially designed for working in tight spaces. Built-in 72 teeth, turning only once 5° s, easy to use a small space barrier and effortless operation. 12PCS METRIC SPANNERS? 12 most frequently used sizes of the ratcheting wrench, including 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm. HEAVY-DUTY? Forged from high polished chrome vanadium steel material (CRV) with mirror polish treatment on the surface, corrosion resistance. The use of quenching and forging technology, each step to ensure product quality. APPLICATION? This Tubing Ratchet Wrench is used to tighten hexagonal head, square head bolts or nuts, and can be widely used for auto repair and maintenance, mechanic repair, pipeline repair, electrician repair etc. The head angle can be adjusted to a maximum of 180 °, Handle has high hardness and large torque, which can be applied to more narrow and harsh environments compared with the straight handle. When the ordinary wrench is used on the flat surface, the finger cannot reach under the wrench. This wrench is more convenient to grasp and use the force on the flat surface. Made of high-quality chrome-vanadium steel, with good toughness and long service life, the set size includes 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm and 19mm. It is applicable to the repair and maintenance of automobile parts. It is applicable to the maintenance of household appliances. It is applicable to the installation and repair of parts of large machines.