We offer discount for large quantity. Welcome to us!7pcs SDS Plus Hammer Drill Parts Set, (4-flute) for Concrete Brick Block Masonry Stone and GraniteFast and Accurate Drilling-The SDS Plus bit slot design allows maximum removal of concrete, making it easy to use and efficient to drillHigh-quality-Copper cross head surface, self-centering cutter tip, high-speed drilling, fast chip evacuation; Four-slot design, fast chip evacuation, reduce wear. Two types of grooves – smaller grooves fix the Bit in the holder. Larger flutes allow the bits to slip in the chuck during operation, increasing drilling torque and hammering energy. Wide Application-Used for drilling glue, concrete, brick wall and other stone materials, widely used in construction, installation and other industries, it is a highly efficient professional drilling machine. Surface Treatment: Sandblasting Cutter Head: Cross Copper Plating Operation Mode: Deep Drilling Shank Type: 2-pit, 2-slot round shank Type: sds-plus Color: Silver Material: 45# YG8C Steel Cutting Head Measurement: 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 18mm Length: 160MM Package Content: 7 x SDS-PLUS Drill Bits Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm. About UsWe provide good product with best price, we support wholesale order/