61-Piece Security Bit Set with Magnetic Extension Bit Holder

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Bit Applications 
-SPANNERS-The Spanner is a security profile with two rectangular pins, otherwise known as "snake eyes". The spanner bit is little used in trade and industry. This profile prevents over-tightening of the screw. This type is often seen in elevators and restrooms in the United States 
-TORQ-The Torq-Set® profile consists of four edges that are shifted asymmetrically to the center. Torq-Set® is a security profile with an offset cross; it is designed for use exclusively by professionals. This profile is primarily used in the aerospace industry. 
-TRIWING-Tri-Wing® is a winged security profile consisting of three edges. Thanks to its unusual, three-wing design, it is intended exclusively for use by professionals. This profile is primarily used in household appliances and in the aerospace industry 
-TAMPER RESISTANT STAR/HEX-Common modification to socket and cruciform style drives to make the fastener more tamper resistant by inserting a pin in the fastener screw drive, requiring a tool with a corresponding hole to drive the fastener. This can also prevent attempts at turning the screw with a small flat-bladed screwdriver. Sometimes the hole is slightly off-center.