This 2 variable-speed ( 0-500 & 0-2000 rpm ±10% ) cordless drill with an adjustable clutch gives you the versatility for drilling different materials and using a variety of bits.
The low speed is for driving screws, the high speed is for drilling holes.
Install ST4X40 screws, Hole opener with a diameter of 28MM drills 50MM thick pine wood, 8MM diameter twist drill drills 5MM thick steel plate, Φ8 construction drill drills 50mm thick red bricks