Part number 592881003. The Husqvarna 2.50 x 16" Vari-Drill Concrete Core Coring Diamond Drill Wet Bit is a high-quality core drill bit designed for efficient and precise drilling in concrete. This particular model is the 2.50 x 16 Vari b30, featuring a 2.50-inch diameter for smooth and consistent results. With the trusted Husqvarna brand name, this diamond drill bit is a reliable tool for professionals in the construction and drilling industries. Perfect for wet drilling applications, this product ensures a durable and reliable performance for all your core drilling needs.