Based on this product's specifications, here are some alternatives and similar models
Hole Saw Irwin 10504181 bi-metal 44 mm, variable tooth pitch 4.5/5.5 TPI
Summary description:
Irwin 10504181 is a 44 mm bi-metal hole saw with a variable tooth pitch of 4.5/5.5 TPI designed for cutting clean circular holes in metal and other materials. The bi-metal construction combines high-speed steel cutting edges with a flexible backing for durability and resistance to heat. Suitable for professional and DIY use with drill drivers and hole saw arbors.