Sliding window roller Roller for aluminum window and door High quality with nice price Material:aluminum&zinc alloy Sliding window rollerFeatures:1.We offer different door & window accessories:window lock,window latch, window wheel, window hinges, lock ring & hook, weather strip, friction stay hinges2.Item No:MA3053.Function:window wheel4.Material:cold-roll plate5.Plate:blue zinc6.Remark:pulley ...