QTi Non Sparking, Non Magnetic Open Wrench Set consists of following 23 Tools – 6 x 7 mm, 8 x 9 mm, 10 x 11 mm, 12 x 13 mm, 14 x 15 mm, 16 x 17 mm , 18 x 19 mm, 19x 22 mm, 20 x 22 mm, 21 x 23 mm, 24 x 26 mm, 24 x 27 mm, 25 x 28 mm, 30 x 32 mm, 32 x 34 mm, 32 x 36 mm, 34 x 36 mm, 34 x 38 mm, 36 x 41 mm, 41 x 46 mm, 46 x 50 mm, 50 x 55 mm, 55 x 60 mm. These tools are Corrosion resistant and is mandantory for working in environments contaning flammable solid, liquids and gases. Copper Titanium Hand Tools are Certified for Safety as per IS 4595:1969 2006 Standards and are Torque Tested to IS 6131:1980 Standards. Copper Titanium Tools are also certified for safe use in magnetic fields upto 3 Tesla. Copper Titanium Hand Tools are 100% Beryllium Free and are much stronger than Aluminium Bronze Tools. Do not use cheater bars or use external leverage – Misuse not covered under warranty