Step 7 F Barrei Nu! lnsert Barrei nuts (H) into rail (6). Attach rail (6) to set of posts (1 and 3) with bolt (F) using the hex key (1). Bolts (F) will screw into barrei nuts (H). Leave the bolts (F) loose for future steps. �Hexkey 04 01 04 Step 8 �Hexkeyº Attach guard rails (8) to set of posts (1 and 2) with bolts (E) using the hex key (1). Tighten all bolts (F) to the end on all rails (6 and 7). 1 04 12W60mm P.