Hitachi 754344 SDS-MAX 4 Edge Drill Bit, 38mm x 570mmHitachi SDS MAX Drill Bit: Precision Drilling for Professionals The Hitachi SDS MAX 4 Edge Drill Bit is designed for professional drilling applications. Its robust construction and optimized design ensure efficient material removal and precise hole creation in concrete and masonry. Type: SDS MAX 4 Edge Drill Bit Diameter: 38 mm Working Length: 570 mm