Makita Metal Hole Saw Drill Bit D-16994: The Makita D-16994 is a bi-metal hole saw engineered for both durability and precise cutting. With a diameter of 16 mm and a maximum cutting capacity of 38 mm, it is well-suited for a variety of materials. This hole saw can effectively cut through steel and cast iron pipe plates, aluminum, copper, and brass, with specific RPM recommendations for each type of material. Its bi-metal construction ensures extended performance and resistance to wear and tear. Designed to facilitate smooth and efficient cutting, it minimizes heat generation and prolongs the lifespan of the tool. Diameter (D) / 16 mm Rpm steel / 550 min⁻¹ Rpm stainless / 275 min⁻¹ Max Cutting Capacity / 38 mm Quantity / 1