Works with: Both the SQUARE and AERO Thule Load Bars. Materials used: 2.5mm (0.098") 3CR12 stainless steel, supplied with mountings for Aero and Square Bar Consists of: 4 x Thule Load Bar adaptors and a nuts and bolts kit Product Dimensions: L 285mm (11.22") x W 205mm (8.07") x H 55mm (2.16") Weight: 2kg (4.4lbs)