Household air conditioners generally use 50-80mm (in practice, 63mm is enough).

Range hoods generally use 125mm drill bits.

If you want to drill holes for home decoration, buy 50mm ones, which are highly versatile.

Exhaust fan - 102mm, water pipes generally use 50mm. In other cases, it will be determined based on the pipe diameter. Remember to buy an extension pole.

Rhinestone is a common name, and its scientific name is diamond drill with water source, or diamond drill for short.

Extended information:

Rhinestone is a common name, and its scientific name is diamond drill with water source, or diamond drill for short.

Main uses of rhinestones

Household: air conditioning holes, water heater holes, bathroom heater holes, range hood holes, exhaust fan holes, gas pipe holes, upper and lower water holes, floor drain holes, toilet holes, heating Holes of various specifications and diameters ranging from Ф1mm to Ф25mm can be drilled directly. Continuous drilling can also be done as needed.

Project: New door openings and windows in the concrete load-bearing wall.

Drilling reserved holes for various models of air conditioners, range hoods, water heaters, etc. Ventilation duct drilling, fire duct drilling, wire trough drilling, wall demolition, floor slab demolition, blasting drilling, reinforcement drilling... Holes of Ф1mm-Ф25mm can be drilled directly. Continuous drilling can also be done as needed. It can directly drill holes and carry out wall hole projects of various sizes.

The main features of rhinestones: accurate size, high construction precision; no vibration, no noise, no dust, in line with environmental protection requirements; no damage to surrounding structures, no need for repair; small equipment size, flexible use, wide range of applications Wide;

Application scope of water drills:

Drilling holes in underground protective fences and continuous walls; drilling holes in floor slabs, reinforced concrete such as roads, dams, tunnels, bridges, etc.;

Cement surface drilling for electrical appliances, telephones, air conditioners, gas, drainage, fire protection, sanitary appliances and other pipes;

Drilling and installation of various anchor bolts; Cement surface drilling for fixing various large equipment Holes; use advanced diamond drilling machines and cutting equipment to quickly drill and open holes in concrete, stone, and brick walls.

Reference: Rhinestone_Baidu Encyclopedia