ARMSTRONG TOOLS 20-316 1/2" 12-pt 1/2" -drive Black
"Lobular" design exerts force on flats of fasteners
Chamfered opening slips easily over fasteners and holds securely
Hardened for extra strength
Prevents rounding of fasteners' corners
Thin wall design fits into tight spots
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"Lobular" design exerts force on flats of fasteners
Chamfered opening slips easily over fasteners and holds securely
Hardened for extra strength
Prevents rounding of fasteners' corners
Thin wall design fits into tight spots
