Based on this product's specifications, here are some alternatives and similar models
Delphi Tools Diamond Core Drill Bit 1 1/4 inch 72/430mm for Core Drilling Machine
Summary description:
The Delphi Tools diamond core drill bit, featuring a 1 1/4-inch connection, is designed for professional core drilling machines. With a diameter of 72 mm and a working length of 430 mm, this high-performance tool is ideal for precise drilling in hard construction materials. Its robust construction ensures durability and efficiency in demanding drilling applications, providing clean and accurate holes for plumbing, electrical, and HVAC installations.