Art. No.: 300053601 Product Name: Adjustment Piece (8) Low Friction 5mm These 5mm ball connectors are made from a low-friction plastic material that ensures smooth movement of the connecting rod. The ball connectors can be used for drop links or tie rods on many of Tamiya's popular vehicles that utilize a 3mm clamping lock. Compared to the standard material, the low-friction version lasts longer before replacement is necessary.