Includes 3/4 Drive One Piece Impact Hex Bit Drivers. Sizes: 5/8 to 1". One-piece design maximizes strength and reduces breakage. Chamfered ends provide easy engagement of the drive tool and fastener. Suitable for use with pneumatic and electric impact wrenches. Specially heat treated for impact use to provide long life, safety, and durability. Drive end features pin retention hole and groove
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