Thread: M20
Adjustment range: 380mm -550mm
Surfacing: hot-dip galvanized
Weight: 2,2kg
–
That's how tightening works, that the threaded bolts are almost unscrewed from the tensioner housing.
The bolted ends are connected to the rope loops and tightened from the hole in the middle of the housing, turning the housing so, that the threads move back into the housing.