Ball joint without guide cone for lower and upper arm, robust ball for quick couplings and top tractor point Patella features: category: 3 hole diameter: 32.4mm patella diameter: 60 mm patella width: 51 mm robusta: Yes net weight: 0.53 kg Applications: The ball joint for lift arms is applicable to both the lower and upper arms of the tractor lift._x000D_Diameter sphere 60 mm Applications lower arm - upper arm Weight 0.53 mm Hammer hole diameter ( P) 32.4mm