These are sharp and sturdy bits designed to bore into softwoods quickly. The design is an improvement over spade and auger bits.
According to our test, these upgrade drill bit：
10 times faster than standard spade for boring hole！
4 times faster than standard auger drill bits for removing chip！
Aggressive Bits:
These are aggressive bits that are designed for drilling through softwoods like pine, cedar, fir, or spruce, the type of woods typically used in residential framing.
These drill bits could be quickly pulled into the wood without having to apply much pressure.
Screw Tip Self-feed & Self-centering Design:
The precision cut lead screw pulls the bit straight and true through material.
4 Flutes Design:
Designed for 4 precision ground cutting edges and 4 flutes engineered to optimize performance, smooth starts, fast cuts and smooth holes and easy for chip removing.
Specification:
Material: Fully Heat Treated High Carbon Steel
Shank: 1/4"(6.35mm) Hex Shank
Number of Flutes: 4
Tip Type: Self-Feeding & Self-centering Screw Tip
Recommended Speeds:
Size 10-20mm=RPM 1500-200
Size 22-25mm=RPM 1000-1500
Size 28-35mm=RPM <1300
Note:
DO NOT attempt to dig with this drill bit going at full speed. Unlike a spade bit where the faster the blade is going the smoother it'll get started, you should try to start relatively slow with this.
For charging electric drill, it should be more than 48V, and if use hand electric drill, it should be more than 500W, or it will drill might be stuck.
Please allow 1-3mm error due to manual measurement.
Due to the difference between different monitors, the picture may not reflect the actual color of the item.
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Specifical step design, one drill for many sizes, very convenient. Durable. Cutting material: iron sheet, aluminum, insulation board, PVC plate wood thickness in 4mm. The hole with a drill can...
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Twist Drill Bit (Auger Carpenter Drill Bit) - 10mm to 35mm
