WARNING: These are SDS MAX drill bits. Which is larger than SDS Plus they will not fit SDS Plus Rotary Hammers!! Use the 4 Piece CARBIDE TIPPED BIT, masonry drill bit set with any SDS Max rotary hammer! Perfect tool for drilling into concrete, brick, tile, etc. 4 High grade Carbide Cutting points for RAPID and PRECISE drilling. FORGED from high-speed steel and precision tempered, these bits are designed with long lasting performance in mind!! All drill bits 24 inches in length; Maximum drill depth 20 inches. Set includes (in): 2 X 24, 1½ X 24, 1¼ X 24; 1 X 24