Features: 1. Simply rotate the head for the right size wrench - 360 degree rotating head. 2. Loosen or tighten all kinds of nuts and bolts 3.Optimization of high carbon steel material, high hardness, Sturdy and durable 4.48 in 1, multi-functional, professional tool that’s designed to tackle all your projects around the house, in the shop, or on the job! 5. Product functions: plumbing, electrical maintenance, vehicle maintenance, family emergency maintenance.