Square Recess Robertson® Insert Bits
1/4" Hex Shank - Extra Hard
These compact insert bits require use of a bit holder - each is built with a snap ring notch for such use. The Extra Hard Bits are recommended for driving heat-treated or case-hardened screws, such as sheet metal or self-tapping and self-drilling screws.
More information is available through the "Product Datasheet" link below.
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