This diamond core drill bit is perfect for drilling through concrete, cement, and brick. With a size of 3 1/2 inches and a thread size of 1 1/4" -7 UNC, it is compatible with most drills and rigs. The model number is SDCBA125X400X89 and it is manufactured by Another Amazing Product USA. The drill bit is made of high-quality diamond material, ensuring durability and precision while cutting through tough surfaces. It is the ideal tool for construction and industrial use, making it a must-have for any business or individual in need of reliable drilling equipment.