The spacer is made from black anodised aluminium.
Both sides of the spacer have 6 x 70mm diameter M5 threaded holes and 6 x 70mm 5mm pass-through holes, so you can either pass bolts through or bolt directly to the spacer.
We have made the spacer light at 155 grams. It has a tapered centre to add strength.
Supplied with 6 x M5 bolts