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China high quality Stainless Steel 304 Bearing Pulley U/V Groove for Lifting Sliding Door Track Wheel with high quality Product Description Specification:Product nameStainless Steel 304 Bearing Pulley U/V Groove for Lifting Sliding Door Track Wheelmaterialstainless steelbearingyescolororiginalFeaturescustomized,low noise,easy installation,sliding smoothly,long...