Bosch T3920SC 3-7/8 INCH SDS-PLUS Speedcore Thin-Wall Core Bit is designed for durability and long-lasting performance thanks to its high-grade tungsten carbide construction. This core bit features an ejector hole that makes removing cores from masonry, brick, and block quick and effortless. It is compatible with Bosch one-piece SDS-plus® pilot bits and extensions, ensuring versatile use for various drilling applications. Model Number: T3920SC