DEWALT Hole Saw Bi Metal 1 3/4 Inch, D180028.  Features DEWALT Hole Saw Bi Metal 1 3/4 Inch.  With a double-tooth design for long life and extreme durability, DEWALT Bi-Metal Hole Saws power through 2 times the material in a single pass. A sharp tooth geometry expedites cutting, and thick, hardened backing plates helps to prevent thread stripping. A high-speed steel height makes them ideal for tough jobs.  

Retail packaged.  New old stock.