Lenox Tools - 1773003 Bi-Metal Speed Slot Arbored Hole Saw with T3 Technology, 4-1/8"

2X more durable with 50% longer life than previous LENOX hole saws | Increased wall thickness improves durability and minimizes tooth loss | Optimized tooth design penetrates metal with ease | Larger, sharper teeth for faster cutting | SPEED SLOT staircase design for easy plug ejection