The industrial alloy steel construction combines with an external hexagonal sleeve ( not included) design to maximize nut surfaces, minimizing slippage during high torques applications across small / M / large drive sizes Featuring resistant hardening and ergonomic knurled grip, this ratcheting socket wrench set ensures years of reliability service across construction site, home garages, and equipment repair workshops Professional mechanics, enthusiasts, and industrial maintenance crews will appreciate the tool ' s balanced durability and multi drive compatibility for varied bolt / nut specifications for automotive engine bays, machinery assembly lines, and tight plumbing installations where traditional wrenches struggle with limited angulars Engineered with a bidirectional 72tooth ratcheting mechanism, this socket wrench delivers 5degree swing precise for efficient fastening in confined spaces while reducing hand fatigue, Manufacturer: Kaeltsyn