Set connection material for arm diam. 150 mm for mobile units. The set consists of the following parts: 1 x Bearing ring diam: 150 mm. 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 3 g for bearing ring.