Features:*Made of positive aluminum alloy materials, *These alternative patio door wheels fit maximum sorts of uPVC , aluminium and bushes sliding doors. Fitted with twin wheels for decreased plenty and may be used to interchange single roller wheels for heavy responsibility applications. Specifications:Rope groove radius: 25mmOuter diameter: 32mmShaft diameter: 6mmMaximum load: 90kgPackage Contents:2 x Door RollerNote:1. The genuine coloration of the thing may be slightly varied from the pictures shown on web page caused by many factors comparable to brightness of your monitor and lightweight brightness.2. Please enable slight manual dimension deviation for the data.