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

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.

• 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