help. what is the proper tool?

[jick.cejoco]

hi guys,
this is my first post here, hope im doing this right.

anyway here's my problem. i need to mount something sa seat but i can't find the proper tool to use. please point me where can i buy the tools except sa casa. been looking around sa handyman and ace no luck.

TIA

here's the problem



tried the 8mm of this but no luck.

the tool you need is called external torx or E torx socket. you probably need the E40 size for the seat bracket