The 0.8m FSN 800 Guide rail is part of the Bosch Professional guide rail system for use with the GKS G and GKT G models - an unbeatable pair for fast, straight cutting. The Bosch FSN guide rail system enables rapid completion of precise, straight cuts. Precise guidance – rails are exactly straight. even when the rail is extended. due to self-aligning connecting piece Stable extension – due to the VEL connector for stable and quick connection of guide rails Safe operation – anti-splinter guard for clean cut edges and adhesive tapes for non-slip handling.