QTi Non Sparking, Non Magnetic Deep Impact Socket 1/2” Hex Set 19 Pcs – 3/8” ,7/16” ,1/2” ,9/16” ,5/8” ,3/4” ,13/16” ,7/8” ,15/16” ,1” ,1-1/16” ,1-1/8” ,1-3/16” ,1-1/4” ,1-5/16” ,1-3/8” ,1-7/16” ,1-9/16” ,1-5/8” are Corrosion resistant and are 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 Standardsand are Torque Tested to IS 6131:1980 Standards. QTi Impact and Deep Impact Sockets are suitable for use with Hydraulic and Manual Torque Wrenches. 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