FAST AND DRILLING - The SDS Plus bit slot design allows maximum removal of concrete, making drilling easy and efficient. HIGH QUALITY - Copper-plated head surface, centering knife tip, high-speed drilling, and quick chip evacuation. Four-slot design enables rapid chip removal and reduces wear. TWO TYPES OF GROOVES - Smaller grooves secure the bit in the chuck. Larger grooves allow controlled bit slippage within the chuck during operation, enhancing drilling torque and hammering energy. WIDE APPLICATION - Suitable for drilling into concrete, brick walls, and other stone materials. Widely used in construction, installation, and related industries. A highly efficient professional drill bit. Surface treatment: Sandblasting Knife head: Copper plating Mode of action: Deep drilling Type: 2-pilot, 2-slot round shank SDS-Plus compatible Color: Silver Material: 45# Steel with YG8C cutter head Available sizes: 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 18mm Length: 160mm Package Contents: 7 x SDS-PLUS Drill Bits Note: Light and display differences may cause slight color variation between the image and actual item. Measurement may vary by +/- 1-3cm.