sliding door pulley,window pulley,door roller,window roller. Track the door slide. Maximum door weight:100kgs. Carbon bearing 1,sliding door pulley,wheel with axis.2,Using for sliding door,window,wardrobe etc, track the door slide.3,OEM is accepted, make any size as per customer's requirement.4,High quanlity riveting,wheel no moveable. SLIDING DOOR TRACK ROLLER