Consider the "operating environment"—avoiding environmental factors that cause drill bit wear.

The cooling conditions of the application scenario (dry drilling / wet drilling), dust/corrosion risks, and space constraints will affect the drill bit's structural protection and lifespan.
Cooling conditions:
Wet drilling (with coolant, e.g., in construction or industrial machining): Choose "metal-bonded drill bits with cooling channels" (which allow coolant to reach the cutting surface directly, reducing temperature), and avoid resin-bonded bits (as they can easily soften when exposed to coolant).
Dry drilling (without coolant, e.g., in indoor renovations or scenarios where adding water is inconvenient): Choose either a "high-temperature-resistant resin-bonded drill bit" or a "metal-bonded drill with cooling vents" (which dissipate heat via airflow, preventing the diamonds from overheating and falling off). Additionally, opt for coarser diamond grit sizes to minimize friction-induced heat generation.
Corrosive environments (such as underwater or chemical processing scenarios): Choose "stainless steel matrix + nickel-based binder drill bits" (rust-proof and chemically resistant) to avoid using standard steel matrices (which are prone to rusting, leading to binder detachment).
Small spaces (such as internal drill holes in equipment): Choose a "short-shank or bent-head diamond drill" (to minimize operational space requirements) and reduce the shank diameter (for enhanced flexibility), while ensuring sufficient rigidity to prevent drill breakage.