Keeper

Deep
Inside
I see it spinning
The part
Piece
Square in the groove
Holding firm
Allowing the rest of me
Move
Tested
Hardened
Binded
Still connecting the gears
Made to run for years
Not even a squeak
Each corner perfect
The last
Thing
Lasting
Beyond the rest
The best
Part
Simplistic art
Square
Will be there until removed
Tried
Proved
Hard to get to
Deeper
Brain shaft to will
Wheel of self
Around the keeper