How big is the SF Tool Max APK file?

The size depends on the version, but most sources show it is usually around: 22 MB to 95 MB generally a medium-small APK (20–100 MB range).

Is skin tool safe for Free Fire?

use skin tools in Free Fire or Free Fire MAX.

Yes, but not as a direct PC app. You can play it on PC using: Android emulators like: BlueStacks LDPlayer GameLoop

There is no “best safe hack tool” for Free Fire MAX. If you mean safe tools for better performance, these are recommended:

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