We are offering Spark Free Tools.Non-sparking, Non-magnetic & Corrosion resistant special purpose safety tool.Self-adjusting & automatically sizes any nut bolt. Tightens and loosens bolts without removingresetting the wrench.Replaces 21 wrenches & operates 42 std. sizes in MM (metric), SAE (American) & Imperial (Inch). Even operates on rounded or stripped nuts bolts. Step-less Rack & Pinion Design.Unique & quick in-built ratchet design. Time saving & mess free tool. Open-ended design is great for plumbing jobs. Does not slip, as the harder your turn, the tighter it grips.Shock-proof nylon-6 handle up to 1000 volts.