They also appreciate the compact design of the bits, sharing that with just the three pieces they can cut holes in a range of sizes. Finally, several reviewers highlight these as a durable and ...

Plumbers and HVAC contractors prefer these bits for making big holes for pipes. The lead screw pulls the bit through the lumber extremely quickly as the gigantic saw-like teeth cut the hole perimeter.

For drilling holes in steel that’s 1/8 in. or thicker, use cutting fluid or a multipurpose oil. Lubricating the bit reduces ...

In contrast to how twist and step drill bits operate, hole saws work by cutting out the edges of an opening. Metal-cutting hole saws are typically available in 3/4-inch to 6 inches in size ...

Twist drill A standard drill bit with two twisted ... Allows for a flat blind hole to be drill or larger diameter holes to be cut Wood Auger Has a wider twist than a normal drill.