Light version, supported on mounting feet (to be ordered separately as accessories). Ball bearings on electrically conductive rubber shock absorbers, inside inlet spiders.  Available from the size 7-7 up to the size 18-18.
The mounting feet can be fixed on the scroll sides, with screws, in four alternative positions, to allow installation with orientation 0°, 90°, 180° or 270°, as defined in ISO 13349.
