Pressed steel - nicely chromed. Oval shaped 137mm x 125mm x 6.2mm thick Four 6.7mm countersunk fixing holes - 2 @ 115mm centres and 2 @ 112mm centres Will accept our rubber gear gaiter GRGTR3 (PICTURED ASSEMBLED BELOW BUT GAITER NOT INCLUDED) Weight 82 gms. OVAL CHROME GEAR SURROUND #GSC