Extreme durability high speed steel cutting edges provide long life in tough applications, including nail embedded wood|Optimized for cordless drilling smooth, effortless drilling extends battery life|Fast clean cutting, 3 cutting edges enhance chip removal for a fast, clean hole|Fast and easy drilling|Aggressive lead screw tip pulls the bit through material quickly and effortlessly|Tougher than nails|Resharpenable with LENOX® TOOLS Diamond™ file (product no 25312DIAF1)|Long lasting bi-metal blade technology