Sliding window & Door roller Frame:zinc alloy/stainless steel, 14/16mm width Roller:copper,nylon Hooker: Single/double glass Sliding window roller, zinc alloy/ stainless steel/ ... Less than 120kg/2PCS Roller, wheel, window roller, window wheel, door roller, door wheel, sliding roller, sliding wheel for UPVC/Aluminum window doorWindow handle, door handles, window hinge, door hinges, friction stay ...