MATERIAL: Ratchet spanner are made of high strength steel and chrome vanadium steel for providing sturdiness, wear-resistance and durability; high polished chrome finish for corrosion & rust resistance; ideal for different kinds of repair works SPECIFICATIONS: These wrenches are metric size. There are many different sizes to choose from. You can choose the right size according to your project. Wrench sizes are stamped on both sides of the handle for easier size identification. DESIGN: Mirror Polish chrome finish that easily wipes clean of oil or dirt, long-term protection. Oval shape beam provides improved comfort. Each wrench is tested strictly against industry standards for hardness, torque and surface, and should last a lifetime under normal use. USAGE: The perfect complete set fits all common small hex fasteners and nuts, great for automotive, industry, home, hobby use and more. The mini size is excellent for use in hard to reach, confined space. SIZE: 21mm and Drive Style: 12-point ring and 15° offset open end, Weight: 0.79807338844 Pounds, Manufacturer: Dapetz