Twist Drill Bit Set

• The fastest boring bits ever!
• 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.