Made of S2 steel for maximum durability. Sizes included: T10H (x2), T15H(x2), T20H(x2), T25H(x2), T27H(x2), T30H(x2), T40H(x2). All bits are 1" (25.4mm) Long with 1/4" (6.35mm) Shank. Counterfeit product may be unsafe because they have not been made to the correct safety standards, and may be of poor quality having been made from shoddy materials.
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