The “Dura-Vey” stainless steel Ball-n-Sokit blind bore bearing and self-aligning axle assembly combined with our exclusively processed “Lubra-Tuf” material offers an alternative to conventional ball bearing rollers. In addition to having three sizes of “Ball-Bolt” axles, roller materials are available in stainless steel, PVC, UHMW or mild steel. Bearings are totally maintenance free and never require lubrication.