Set connection material for arm diam. 200mm for mobile units. The set consicts of the following parts:1 x Bearing ring diam: 200mm – 2 piece plastic for suction arm, 1 x screw set for plastic bearing ring, 8 x screws with hexagon socket M6x35, 8 x washers M6, 8 x M6 hex nuts, 8 x M6 spring washer, 1 x Grease tube 3g for bearing ring