The Lenox 3003636L Bi-Metal Speed Slot Hole Saw with T3 is a game - changer. Measuring 2 - 1/4' (57mm), it has an upgraded tooth shape that allows it to cut 50% faster than older Lenox hole saws. When slicing through metal, it's twice as tough as the previous version. Its thicker walls reduce tooth loss and boost durability. The staircase - style SPEED SLOT features a wide, low - placed slot and multiple leverage spots. This makes it a breeze to remove plugs with a screwdriver, efficiently clears sawdust and chips, and stops plugs from getting stuck. Standing 10% taller than previous models, it cuts through two - by lumber cleanly. Each package includes one hole saw.

Using this Lenox hole saw is easy. First, make sure the material you're cutting is properly secured. You can use a vise or clamps to hold it in place. Then, attach the hole saw to a suitable power drill. Start the drill at a slow speed to get the hole started, and then gradually increase the speed. When you're done cutting, use a screwdriver to remove the plug through the SPEED SLOT. As for maintenance, after each use, clean the hole saw to remove sawdust and chips. You can use a brush or compressed air. Store it in a dry place to prevent rust. And always wear safety goggles when using the hole saw to protect your eyes from flying debris.