There are many kinds of diamond drills. Taking Dongcheng as an example, it can be divided into two types: economic type and professional type, with total length of 365 mm (effective length 300) and 455 mm (effective length 400) respectively. The diameters are 20.25.27.32.36.38.40.44.51.56.63.66.71.76.83.89.96+002+0008 respectively. 59.162.168.180.200, ranging from 20 yuan to 200 yuan.
The range hood is generally 63*365, which is similar to the hanging air conditioning duct, but some sizes are different. You'd better measure it yourself, in case it doesn't fit, you can avoid rework. But I'm a power tool dealer and I don't know much about decoration. If you don't know anything about tools, you can ask me. The possibility of helping with the renovation is limited.