HL-403 & HL-457
Nailbreaker Series (Moly Coated)
Key Features
Special molybdenum surface treatment promotes cooler, smoother drilling.
Effective on wood containing nails or hard inclusions.
Manufactured from premium-grade steel for enhanced reliability.
Cuts cleanly with reduced binding; improved chip ejection for faster progress.
Maintains sharpness longer under professional use.
True-center machining helps prevent run-out.
Shank recesses allow secure attachment to extension systems.
Description
The molybdenum coating helps the bit run cooler and stay sharper longer, especially in wet or resinous wood.
Strengthened body geometry increases stability, providing a solid, less flexible drilling experience.
Designed for high-performance boring in carpentry, renovation, and utility work.
Molybdenum Coated: molybdenum cools and lubricates the bit. The bit stays sharper longer because the heat treatment lasts longer. The bit ejects chips and bores faster than ordinary bits and binds less, even in wet or resinous woods.
Deeper lands: for a stronger less flexible bit.
Extensions: two recesses on shank to receive extension set screws.
HL-403M 18”OAL x 15”Twist
Dlameter | QC Hex Shank Size | Dlameter | QC Hex Shank Size |
1/2” | 7/16” | 15/16” | 7/16” |
9/16” | 7/16” | 1” | 7/16” |
5/8” | 7/16” | 1-1/8” | 7/16” |
11/16” | 7/16” | 1-1/4” | 7/16” |
3/4” | 7/16” | 1-3/8” | 7/16” |
13/16” | 7/16” | 1-3/8” | 7/16” |
13/16” | 7/16” | 1-1/2” | 7/16” |
7/8” | 7/16” |
HL-457M 8”OAL x 5”Twist
Dlameter | QC Hex Shank Size | Dlameter | QC Hex Shank Size |
3/8” | 5/16” | 7/8” | 7/16” |
7/16” | 5/16” | 15/16” | 7/16” |
1/2” | 7/16” | 1” | 7/16” |
9/16” | 7/16” | 1-1/8” | 7/16” |
5/8” | 7/16” | 1-1/4” | 7/16” |
11/16” | 7/16” | 1-3/8” | 7/16” |
3/4” | 7/16” | 1-1/2” | 7/16” |
13/16” | 7/16” |
