The Irwin Speedbor Max is the fastest Speedbor ever made, designed for fast, clean holes in wood. Built with 40% thicker cutting surfaces and a 25% larger shank than previous Speedbor models for increased strength and durability.

• Tri-flute design removes chips 4x faster than standard spade bits
• Three cutting spurs scribe the hole for cleaner cuts with less breakout
• Full screw tip pulls the bit into the wood - self-feeding
• Grooved 1/4" hex shank prevents slipping in drill or quick-change chuck
• 6" standard length
• Bit diameter: 9/16"
• Fits all standard 1/4" quick-change chucks