Refresh your TXC-4M™ portal drive axles with these high-quality black-seal bearings. Black-seal bearings offer ultimate protection from the elements with less maintenance in dirty environments. Includes 4x7x2.5 mm (2), 8x12x3.5 mm (1), 3.5x7x2.5 mm (2), 3x6x2.5 mm (3), 6x10x 3mm (1).