Tapco Pro & Max Cut Off Flange Track Bearing Kit comes with (2) 12334 Rollers, (2) 12364 Screws, and (2) 10094 Lock nut 1/4-20. Tapo's bearing kits make it easy to replace worn-out bearings on a Tapoc Pro or Max aluminum siding brake. This will help take the hassle out of part replacement or repairs. Tapco recomends tuning up your breaks each year.