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Irwin Tools 3046003 Speedbor MAX Self-Feed Wood Bits, 18', Black

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Free shipping on orders over $29.99

$21.13

$ 9 .99 $9.99

In Stock

About this item

  • Drill bits have 3 cutting edges that are hardened for durability and long life in tough materials
  • Drill bits feature replaceable screw-point tips that pull the drill bit fast for clean, true holes
  • Drill bit has an aggressive screw pitch
  • 7/16-inch hex impact shank reduces slipping in standard chucks
  • IRWIN drill bit extension is compatible with most 7/16-inch impact drills
  • Drill bits have 3 cutting edges that are hardened for durability and long life in tough materials
  • Drill bits feature replaceable screw-point tips that pull the drill bit fast for clean, true holes
  • Drill bit has an aggressive screw pitch
  • 7/16-inch hex impact shank reduces slipping in standard chucks
  • IRWIN drill bit extension is compatible with most 7/16-inch impact drills


This IRWIN SPEEDBOR MAX 18" Shaft Extension features a manual locking design, which securely holds 7/16-inch hex bits. SPEEDBOR MAX bits feature 3 durable cutting edges that are resharpenable to extend the life of the drill bit. The aggressive screw pitch pulls the bit fast for clean, true holes, while the 7/16-inch impact shank helps reduce slipping in standard chucks.


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