Housing made out of steel, inner square section made out of steel tube for mounting plug-in lever arms on one or both sides. The inserted part should be at least three times longer than the clearance C. Up to type DR-S 18 the lever arms can be mounted by one through bolt and the levers are then fixed by frictional force at any position within 360 deg. Both ways of fixation are particularly well suited for motions at the plus or minus angular range. All metal parts are paint finished. ROSTA Rubber Suspension Unit, Type DR-S, Steel, Blue Painted, 25 mm L x 20 mm W x 20 mm H