Description of LENOX Tools Bi Metal Arbored Technology Cutting Tools ~ Hole Saws & Accessories
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.
I bought this to use Gromit's to drill a 3/4" hole for 3/4" LED lights in to drill my service car. It works great and although the metal was thick it cuts like butter. LENOX is a trusted brand. worth the money.
hole was already started with a smaller drill, so I moved slowly with light pressure. A few seconds later the fragile drill broke. When I took it out to insert a quality drill bit I noticed it looked weird at speed. I'm glad I didn't have a chance to drill with that horribly out-of-round hole saw.
A cutting tooth in the chisel is located along the weld. Once welded, the tooth disengages it from the others, causing it to "bite" and poke a horrible, oversized hole and then snap. I failed "two" crowns due to the same error. Do not buy. you have been warned