Sliding doors and Windows silent bearing pulley roller/ER-R-018

Sliding door silent roller,Meet AAMA standard,Aluminum housing,steel bearing,nylon wheel, over 200 lbs door,1.5 inch diameter wheel,single wheel, 10 years gurantee,existing mold,for UPVC sliding door&window,high-quality,10000 cycle testing,20years experience OEM ,manufacture factory,45days delivery,also can produce as your print or sample,30days to make mold and samples.