These IRWIN TRI-WING Insert Bits feature a fastener type commonly used in aviation and electronics industries. They are manufactured with industrial-grade S2 steel for maximum life and durability.

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These IRWIN TRI-WING Insert Bits feature a fastener type commonly used in aviation and electronics industries. They are manufactured with industrial-grade S2 steel for maximum life and durability.

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Irwin Tools 3053031 Screwdriving Insert Bit, TRI-WING #2 (2 Pack)