I believe you got what you paid for. However, considering the power, the handheld should be above 1600W, and the speed can be adjusted. The desktop is about 2500W W W. Personally, I use Ding Jian now, and it is basically no problem to drill the air conditioning hole (63), but it is not easy to grasp the drill bit 160 or above. I think other brands will do the same. If it's amateur drilling, one hand is enough. If it is a professional drilling, you can consider a bench drill with a rod (about 3 meters), which can be operated by one person.