Only wanted a star pull because the discs are deleted very close to the mandrel of the flex. But it was only the first 8 disks then it has become better. the first I had to really up the presssen and take down then they went broke. :-( but with twist and pull we went. are just not 100% ganu equal. but for the price I am really very happy. especially with the life I am very satisfied. have approx 4 meter spring steel 2mm thick with about 50 HRC with a slice cut. that is absolutely ok. abe who also push forward about 1.6mm and 1.3mm thickness at the center approx. What has astonished me still is the concentricity, which is really good. knann you recommend any of the many slide needs to separate. Price - performance = sehrgut