Home > Shop > Tools > Power Tool Accessories > Driver Bit & Holders > BOSCH SPEEDCORE 3-7/8" SDS-PLUS THIN-WALL CORE BIT BOSCH SPEEDCORE 3-7/8" SDS-PLUS THIN-WALL CORE BIT Item #: 21654310 Mfr #: T3920SC $191.90 each Checking Inventory Add to Cart