Yokomo ZC-507TA 1/16 inch Tungsten Carbide Ball (16 pcs.) 橫崛 Yokomo ROR-010  [ZC-507TA]

That's an ultra-high accuracy tungsten carbide ball. Perfect for thrust bearing inside differential housing. The increased precision of ball area enables smoother differential procedure, which product also provides high use opposition. May be used on all framework that use 1/16 ins size thrust balls.