Oval tilt & turn roses 30x60 and 30x65 mm with engineering plastic overcoated iron spindle 7x8 mm
The indistructable plastic coating is overmolded onto handle side of the spindle.
The spindle maintains its ability to expand when the handle is fixed with a grub screw
and therefore it will clamp itself into the square hole of the handle.
The overmolded engineering plastic material maintains a perfect coaxiality between the squares of 7 and 8 mm.
The semi-transparency of the coating facilitates the orientation of the cut in the spindle with respect to the grub screw.
The grub screw remains fixed into the plastic material and therefore does not unscrew and consequently release the handle.
Last but not least this is a more price worthy solution compared to the version with a complete metal 7x8 mm spindle