Bosch Professional FSN WAN angle guide for guide rail (compatible with all Bosch GKS Professional circular saws, GKS G-models, GKT plunge saws, selected GST jigsaws + GOF routers with adapter) : Amazon.co.uk: DIY & Tools
Bosch FSNKIT FSN Guide Rail Kit 2 x FSN1600 + FSN Bag + FSN VEL